Our blogs and videos choice: dna

Natural Diet and Lifestyle Reverse the Effects of Aging | Health News

While DNA and genetics play a minor role, poor diet and lifestyle directly contribute to the leading causes of mortality, coronary artery disease, cancer, stroke, and dementia. Fortunately we can steer our destiny toward optimal health even after years of dietary and lifestyle abuse by addressing each identified aging factor. Neutralizing the Effects of Free Radicals Free radicals are unstable electrons produced during the normal course of metabolism, causing damage to the delicate cell nucleus and mitochondria. Free radicals can wreak havoc with DNA, altering its structure and causing [more...]

Date: 2010-10-12 07:34:49

Blog posts (178) | Videos (40)
 


FDA, Walgreens Puts Pathway Genetic Test Sales on Hold

FDA, Walgreens Puts Pathway Genetic Test Sales on Hold Walgreen’s drug stores originally had plans to launch the retail sale of an at-home genetic test on Friday that allows the consumer to assess his or her risk for diseases such as breast cancer, heart disease, and Alzheimer’s. The nation’s largest drugstore chain has opted to put sales on hold after an FDA warning that the test is not approved and could put consumers at risk. The test requires FDA authorization because it involves a device that allows consumers to collect their own DNA. The agency is also concerned about the fine [more...]

Date: 2010-05-13 12:20:02


A step forward in understanding the BRCA2 'cancer gene' « Cancer ...

“Understanding how BRCA2 masterminds the DNA repair kit to prevent tumour formation is a vital step towards developing new treatments for this type of breast cancer.” This discovery is not going to immediately change the way that people with BRCA2-related cancer are treated. But it’s an extremely important finding for cancer and DNA repair researchers around the world, as they work to understand the disease and develop more effective treatments. As we’ve written about before, half the battle in cancer research is developing the tools and techniques to answer vital questions. And now [more...]

Date: 2010-08-27 09:49:03


The Vatic Project: Why Great Minds Can't Grasp Consciousness

Unlike some other scientists -- most notably the late Francis Crick, co-discoverer of the structure of DNA, and his colleague Christof Koch, a professor of computation and neural systems at Caltech -- who believed that different aspects of consciousness like visual awareness are encoded by specific neurons, Greenfield thinks that consciousness involves large groups of nonspecialized neurons scattered throughout the brain. Important for Greenfield's theory is a distinction between 'consciousness' and 'mind,' terms that she says many of her colleagues use interchangeably, but which she [more...]

Date: 2010-10-12 23:00:00


Wellcome Library: Tour de Francis

So consumed was Crick with his work on the helix structure of DNA that he had a model of it displayed outside his house on 19-20 Portugal Place also referred to as ‘The Golden Helix’ where he lived with his wife Odile from Autumn 1952. The helix is not double but single here, a simple symbol of Crick’s momentous discovery the previous year. It was here on 18th October 1962 that Cambridge police were allegedly called to a disturbance involving exploding firecrackers being thrown down to the street. The owners had thrown an extravagant party to celebrate being awarded the Nobel Prize for [more...]

Date: 2010-10-13 11:40:00


Plasmid DNA Recovery Using Size-Exclusion and Perfusion ...

Finally, a second size-exclusion chromatography step was carried out to purify the plasmid DNA from other small molecular-weight contaminants. Analytical methods proved that the purified plasmid DNA had a purity of 95% after Sephacryl S1000. Plasmid identity was confirmed by restriction enzyme digestion. Biological activity of the purified plasmid was confirmed in vivo; immunized mice developed a positive antibody response against all HCV structural antigens. This procedure offers an alternative to traditional methods that use organic reagents, mutagenic and toxic compounds, and [more...]

Date: 2008-09-01 04:00:00


Biosensors: Morpholino offers you more

Molecular biologists and geneticists often use DNA microarrays to detect DNA, measure gene expression levels and detect the single-nucleotide polymorphisms that are responsible for various genetic diseases. A DNA microarray has tens of thousands of biosensors on its surface; each biosensor contains a short DNA fragment, known as a probe, for recognizing DNA targets. Ideally, the DNA biosensor should have high sensitivity (the ability to detect very low concentrations of targets), high specificity (the ability to distinguish the difference between similar targets) and high stability (the [more...]

Date: 2010-10-13 09:52:22


Science Webulagam: Ribonucleic acid (RNA)

Ribonucleic acid (RNA) is a biologically important type of molecule that consists of a long chain of nucleotide units. Each nucleotide consists of a nitrogenous base, a ribose sugar, and a phosphate. RNA is very similar to DNA, but differs in a few important structural details: in the cell, RNA is usually single-stranded, while DNA is usually double-stranded; RNA nucleotides contain ribose while DNA contains deoxyribose (a type of ribose that lacks one oxygen atom); and RNA has the base uracil rather than thymine that is present in DNA. RNA is transcribed from DNA by enzymes called RNA [more...]

Date: 2010-04-27 13:28:00


When the disease strikes – Who You Gonna Call?

Viruses can mutate (change their DNA or RNA structure), and therefore influenza strains provide researchers with the daunting task against the strain of the virus at their own gameTransfiguration, from different strains of the virus injection allows a vacation to make the body enough so that the antibodies in our immune system will not fall victim to a full-scale attack. Covering us with different strains in one shot, maybe some parts of the sequence of points in the immune system of our body, making these antibodies stimulated by these specific charges or other charges that some who have [more...]

Date: 2010-10-04 12:50:32


Dr. Pandey “pulls off” new DNA sequencing method

The current method to sequence DNA is called gel-electrophoresis. This process is very costly and time consuming. However, Dr. Pandey and his research team have proposed a way to make DNA sequencing far easier and cheaper than the current method. For those of you scratching your heads and wondering what the purpose of DNA sequencing could possibly be, imagine in the futurew going to the doctor and getting customized medicine just for you based on your DNA. This medicine would do exactly what it needed to in order to fix your problem because it was made specifically for you and only you. [more...]

Date: 2010-09-23 17:36:11


Biosensors: Morpholino offers you more

A DNA microarray has tens of thousands of biosensors on its surface; each biosensor contains a short DNA fragment, known as a probe, for recognizing DNA targets. Ideally, the DNA biosensor should have high sensitivity (the ability to detect very low concentrations of targets), high specificity (the ability to distinguish the difference between similar targets) and high stability (the ability to withstand wear and tear over many cycles). Fig. 1: Scanning electron microscopy image (left) of a cluster of parallel SiNWs, and a schematic illustration (right) of the Morpholino-based sensing [more...]

Date: 2010-10-13 12:52:44


Old School Science Models at Geeker

Pioneer geneticist and biologist James Watson handles an early model of molecular DNA. In 1953, Watson, Rosalind Franklin, Maurice Wilkins, and Francis Crick discovered the structure of DNA — arguably the single most significant medical and biological breakthrough in the history of science. A model of a human cell displayed at an American Medical Association convention. A man (look closely, you’ll find him) stands inside a model of a human cell at an American Medical Association convention. Renowned rocket scientist Dr. Wernher von Braun (1912 – 1977) poses with a model of a [more...]

Date: 2010-10-09 15:24:31


Sequencing | DNA Sequencing

Complete DNA Sequencing & Synthesis Services,DNA Sequencing Analysis System. Sequencing Sequencing results in a symbolic linear depiction known as a sequence which succinctly summarizes much of the atomic-level structure of the sequenced molecule. Contents . DNA sequencing The term DNA sequencing refers to sequencing methods for determining  The advent of DNA sequencing has significantly accelerated biological research and discovery. DNA sequencing: Definition DNA sequencing ( ¦dē¦en¦ā ′sēkwənsiŋ ) ( cell and molecular biology ) The determination of the sequence of [more...]

Date: 2010-07-08 04:52:50


New twists in double helix discovery story are uncovered ...

Cold Spring Harbor, NY -- The story of the double helix's discovery has a few new twists. A new primary source -- a never-before-read stack of letters to and from Francis Crick, and other historical materials dating from the years 1950-76 -- has been uncovered by two professors at the Watson School of Biological Sciences at Cold Spring Harbor Laboratory (CSHL). The letters both confirm and extend current knowledge of the circumstances surrounding the epoch-making discovery of DNA's elegant double-helical structure, for which Crick, James D. Watson (now CSHL's chancellor emeritus) and Maurice [more...]

Date: 2010-10-10 04:39:02


Can Smoking Induce DNA Changes Leading to Colorectal Cancer

How DNA Changes Can Lead to Cancer? Our body is made up of basic units called cells. These cells follow certain instructions called genes to carry out their normal functions. Genes are chemical structures made up of DNA molecules. When these genetic instructions are read or transcripted by the cells to know their functions, the DNA molecules produce another type of molecules known as RNA. These RNA molecules in turn produce certain chemicals called proteins which carry out the instructions into various functionalities of the cells. There are several factors and ways by which the structure [more...]

Date: 2010-10-03 04:39:39


Technology Review: A Family Mystery, Solved by a Genome

More than a dozen people who have had their genomes sequenced stand on stage in an R&D center near Boston. Billed as the last time all such people might fit in one room before the technology moves into the mainstream, the event doesn't quite include the whole group: actress Glenn Close and South African archbishop Desmond Tutu, among others, didn't make it. But those who did include James Watson, codiscoverer of the structure of DNA; Harvard historian Henry Louis Gates Jr.; entrepreneur Esther Dyson; and a smattering of leaders from gene-sequencing companies. Leaning against a wall at one end [more...]

Date: 2010-08-25 00:00:00


DNA Sequencing Could Get Public-Market Boost - Venture Capital ...

Its technology is also not limited to DNA sequencing, according to the company. Other potential markets include the study of chemical and structural modifications of DNA, and the processing of RNA and proteins, according to its filing. Pacific Bio’s net loss for the first six months of 2010 was $63 million, up from $35.1 million in the first half of 2009, according to its S-1 filing. Net losses for 2009 were $87.7 million. As of June 30, it had an accumulated deficit of $255 million. It had revenue of $1.2 million for the first six months of this year, compared to none for the corresponding [more...]

Date: 2010-08-17 20:41:11


Biology Animations: animation of DNA replication

The chain elongation reaction catalyzed by DNA polymerases is a nucleophilic attack by the 3’-OH group of the primer on the innermost phosphorus atom of the deoxynucleoside triphosphate. A phosphodiester bridge forms with the concomitant release of pyrophosphate. The subsequent release of pyrophosphate by pyrophosphatase helps drive the polymerization forward. ***Elongation of DNA chain proceeds 5’-to-3’ direction. ***Template directed enzyme also have nuclease activity. Maurice Wilkins-Rosalind Franklin (x-ray diffraction photos of fibers of DNA) Erwin Chargaff (nucleotide ratios in [more...]

Date: 2007-10-12 15:35:00


DNA Interactive

DNA Interactive is an educational web site resource that celebrates the 50th anniversary of the discovery of the DNA double helix structure. There are six sections to this web site: Timeline, Code, Manipulation, Genome, Applications, Implications. Each section is split into modules and has rare video interviews with scientists, 3D animations, and narrative text to present and explain DNA science. Timeline is an interactive, animated exploration of genetics and molecular biology from Gregor Mendel and early genetics to Mario Capecchi, Francis Collins and current biotechnological techniques and [more...]

Date: 2010-08-05 15:04:31


DNA Isolation and Modeling « NWABR

This entertaining and inexpensive protocol was adapted from Biotechnology in the Classroom, UC Davis and Diane Sweeney, Biology — Exploring Life. First we, the teacher-students line up for our materials: Dr. Hutchison regales us as we select strawberries and collect materials: This flexible protocol has been used with first graders all the way through high school and administrators. You can make it as in depth as you like. All materials can be bought in a grocery store, there are no expensive reagents. This was my lovely strawberry, in a sealed plastic bag and on a paper towel, [more...]

Date: 2010-03-07 00:00:57


Rivalry Among DNA Sleuths Comes Alive in Letters - 3quarksdaily

The letters were written during a 26-year period when Crick informally guided the progress of molecular biologists around the world in establishing how DNA operates in living cells. An article on the letters was published Wednesday in the journal Nature, focusing on those related to the discovery of DNA’s double helix structure in 1953. “We are really between forces that may grind all of us to pieces,” the physicist Maurice Wilkins wrote after a disastrous attempt by Crick and his colleague James D. Watson to build a model of DNA based in part on data gathered by Rosalind Franklin. [more...]

Date: 2010-10-01 11:25:46


Coiling bacterial DNA | Code for Life

A chain of proteins hold bacterial DNA in a compacted spiral. You and I are eukaryotes. Our cells have nuclei, repositories that contain our DNA and the proteins that read them to produce an RNA copy of them. In earlier articles, I’ve mentioned in passing how the enormous length of DNA in our cells is fitted into a nucleus. Our DNA, all 2 metres of it, were you to stretch it out end-to-end — is fitted within a nucleus with a diameter of roughly 6-10 micrometres, about one-millionth of a metre. The trick is that a DNA molecule is very skinny — it’s only about 2 nanometers wide (2 [more...]

Date: 2010-08-24 10:09:08


Why Do Histones Bind Tightly To DNA? | Why

Histones are an important part that helps bind the DNA chromosomes together. They are amino acids that are composed of protein and are positively charged. Since the acidic part of the DNA is negative and the Histones are positively charged, it helps bind the DNA together. Protein interactions play an important role in the functions of the DNA. The five types of Histones are H1 (H5), H2A, H2B, H3, H4 and they are consistently present in all forms of DNA. DNA (Deoxyribo Nucleic Acid) is the genes that a living organism, cell, virus inherits and sometimes referred to as a “blueprint” (basic [more...]

Date: 2010-09-21 17:56:17


The effect of DNA signals on nucleosome formation, chromatin ...

Much of the human genome is non-coding and it seems likely that at least some of the non-coding DNA is functionally important. However, only little is known about the possible function of the bulk of the human genome. Since essentially all the nuclear DNA is packaged into chromatin, it is likely that functional effects of non-coding DNA are mediated by the chromatin structure. By making use of human genomic sequence information now available, we showed that a specific set of periodic DNA motifs (period-10 VWG/CWB) encoded in genomic DNA is predicted to influence human chromosome function. The [more...]

Date: 2010-08-25 23:15:17


DNA Structure & Testing : How to Make a DNA Model

Making a DNA model, which is in the form of a double helix, requires using four colors to represent adenine, guanine, cytosine and thymine, the four bases that make up the genetic material. Make a DNA model to better understand it with information from a biology teacher in this free video on science. Expert: Janice Crenetti Contact: WeAreHDTV.com Bio: Janice Creneti has a Bachelor of Science in secondary science education and a Bachelor of Art in biology from Boston University. Filmmaker: Christopher [more...]

Date: 2010-09-24 11:06:06


Coming Soon to You - Massive DNA Destruction - Let's Roll Forums

Metaphysicians tell us that an individual's DNA composition approximates one's consciousness, and vice versa: One's consciousness determines one's DNA structure. Attack one, you attack the other. Improve one and you improve the other. Mainstream Doctors Fritz-Albert Popp and Bruce Lipton both tell us that our DNA appears to be the vital link between our physicality and spirituality. Dr. Popp, founder of the International Institute of Biophysics, at Neuss, Germany, and Dr. Lipton, of the University of Wisconsin, both confirm that modern science now realizes and recognizes that our DNA [more...]

Date: 2010-10-05 04:41:08


BIO-SYNTHESIS - Custom Antibody Custom Peptide Synthesis Custom ...

BIO-SYNTHESIS, INC. is a leading life science products company with over 20 years of experience in the design and synthesis of Custom Peptide, small molecules and reagents for small scale research and bulk pharmaceutical trials. Using state of the art technology in our well-equipped laboratories. Emerin Antibody Catalog# : 4031 Emerin is a serine-rich nuclear membrane protein and a member of the nuclear lamina-associated protein family that includes proteins such as LAP2 and MAN1. Each family member, including Emerin, has an ~40 amino acid LEM-domains that binds barrier-to-autointegration [more...]

Date: 2010-10-13 10:34:00


Cheek swab for lung cancer: breakthrough in biomedical optics ...

Not only can nanocytology help detect cancer early, it can shed light on the fact that these small changes in the cell structure are very telling. Changes in the DNA are also very revealing. For decades, scientists have known that smoking causes cancer because it damages the DNA. Now British researchers have uncovered the link between smoking and epigenetic changes in DNA. “Until now, however, there has been no direct evidence that smoking induces DNA methylation in humans,” Cancer Research UK Institute of Cancer Studies Dr Yuk Ting Ma said in a statement. “DNA methylation is a type of [more...]

Date: 2010-10-11 17:01:25


DNA Polymerase and other factors

DNA polymerase can add free nucleotides to only the 3’ end of the newly-forming strand. This results in elongation of the new strand in a 5'-3' direction. No known DNA polymerase is able to begin a new chain (de novo). DNA polymerase can add a nucleotide onto only a preexisting 3'-OH group, and, therefore, needs a primer at which it can add the first nucleotide. Primers consist of RNA and DNA bases with the first two bases always being RNA, and are synthesized by another enzyme called primase. An enzyme known as a helicase is required to unwind DNA from a double-strand structure to a [more...]

Date: 2008-07-27 11:03:00


The Boss Part 2 - Getting To Know DNA: Structure 10/4/10

Mr. Jesse Craig Centennial, Colorado, United States I am in my 13th year of teaching Science at Arapahoe High School. Our department is in the process of finding ways to put our students in charge of their own learning. Podcasts of my classroom teaching allow my students the opportunity to review important material. Blogging allows my students to continue class discussions outside the walls of the classroom. View my complete profile This blog hosts podcasts created by Mr. Jesse Craig at Arapahoe High School in Centennial, CO. The podcasts are designed to provide outside-of-class help to my [more...]

Date: 2010-10-04 20:48:16


Physics News :: DNA art imitates life: Construction of a nanoscale ...

DNA art imitates life: Construction of a nanoscale Mobius strip The enigmatic M?s strip has long been an object of fascination, appearing in numerous works of art, most famously a woodcut by the Dutchman M.C. Escher, in which a tribe of ants traverses the form's single, never-ending surface.Scientists at the Biodesign Institute at Arizona State University's and Department of Chemistry and Biochemistry, led by Hao Yan and Yan Liu, have now reproduced the shape on a remarkably tiny scale, joining up braid-like segments of DNA to create M?s structures measuring just 50 nanometers across?roughly [more...]

Date: 2010-10-04 12:45:53


This Week in Science History: 4-10-10 | Southern Genes

Maurice Hugh Frederick Wilkins – Died 5 Oct 2004 (born 15 Dec 1916) Maurice Hugh Frederick Wilkins was a biophysicist, whose X-ray diffraction studies of deoxyribonucleic acid (DNA) were significant in the determination of the molecular structure of DNA accomplished by James Watson and Sir Francis Crick. For this work the three scientists shared the 1962 Nobel Prize for Physiology or Medicine. Wilkins was born in Pongaroa, north Wairarapa, New Zealand, his family moved to Birmingham, England when he was [more...]

Date: 2010-10-04 22:14:13


An Epigenetic Mountain for Ovarian Cancer Research « Promega ...

Epigenetic regulation of gene expression is heritable, and refers to changes in gene activity that do not involve alterations to the primary DNA sequence, but rather modifications to the DNA molecule itself or to the chromatin structure. Identifying a gene involved in chromatin/nucleosome structure as a major player in cancer is important, because although epigenetic changes are prevalent in many cancer types, the relationship between the genetic changes and the epigenetic profiles of tumors is not well understood. The identification of genes directly involved in chromatin remodeling, histone [more...]

Date: 2010-10-08 13:17:45


Structure of an Ebf1:DNA complex reveals unusual DNA recognition ...

Dear Colleagueaaa, Here is an article you may find interesting. Elucidation of a C-Rich Signature Motif in Target mRNAs of RNA-Binding Protein TIAR. http://biowizard.com/abstract.php?pmid=17682065 Kim HS, Kuwano Y, Zhan M, Pullmann R Jr, Mazan-Mamczarz K, Li H, Kedersha N, Anderson P, Wilce MC, Gorospe M, Wilce JA Mol Cell Biol. 2007 Aug 6; PMID: 17682065 BioWizard [more...]

Date: 2010-10-06 13:48:02


Roland San Juan: Terrifying Future - Scientists Mixing Human ...

Like the ancient Watchers before him (Watchers were fallen angels that mingled human dna with animals and their seed to produce Nephilim. More on this will be discussed later), Bostrom envisions giving life to Nietzsche’s Overman (posthumans) by remanufacturing men with animals, plants, and other synthetic life-forms through the use of modern sciences including recombinant dna technology, germ-line engineering, and transgenics (in which the genetic structure of one species is altered by the transfer of genes from another). Given that molecular biologists classify the functions of genes [more...]

Date: 2010-10-13 02:15:00


DNA sequencing » Blog Archive » DNA Sequencing

Structural Biochemistry/DNA recombinant techniques/DNA … DNA sequencing determines the order of Adenine, Guanine, Cytosine, and Thymine within a DNA molecule. … It is one of the simplest techniques when it comes to DNA manipulation. [more...]

Date: 2010-09-28 00:13:44


DNA Programmed To Make Möbius Structures

The origami method relies on a long, single stranded segment of DNA, used as a structural scaffold and guided through base pairing to assume a desired shape. Short, chemically synthesized “staple strands,” composed of complementary [more...]

Date: 2010-10-04 15:53:17


DNA and the 'magic rings' trick | UC Health

A new study from UC Davis shows how, like a conjuring trick with interlocking rings, two interlocked pieces of DNA are separated after DNA is copied or repaired. The finding was published online Oct. 10 in the journal Nature Structural and Molecular Biology.While reconstituting the DNA repair system of yeast in a test tube, the researchers found that a complex of proteins called Sgs1, Top3 and Rmi1 allow one DNA strand to open and the other to pass through. “This protein complex does what magicians do,” said lead researcher Stephen Kowalczykowski, distinguished professor of microbiology [more...]

Date: 2010-10-12 17:23:14


Xiang-Jun's Corner: Further details of the DNA story revealed by ...

I read Watson's "The Double Helix" book a while ago, and overall I am quite familiar with the DNA story. Still, I found this account fascinating: it provides a "CAST LIST" in "The search for the structure of DNA" with photos (p521); and it succinctly summarizes the relationships among the key players. In science, no other story shows more dramatically the collaborative and competitive nature among scientists working on similar projects. Franklin’s X-ray diffraction photograph 51 of B-form DNA (see figure above, from Wikipedia), with its unambiguous evidence that DNA was helical, proved [more...]

Date: 2010-10-01 03:42:00


New Letters Illuminate Personalities, Story Behind DNA Structure ...

Nine boxes of previously unknown letters, postcards and other correspondence from Francis Crick, one of the co-discoverers of the structure of DNA, have been unearthed in the files of his longtime colleague, according to an article [more...]

Date: 2010-09-29 17:48:12


Can DNA Tests Reveal Nationality? » Scienceline

The Borders Agency is primarily using two types of DNA tests: mitochondrial DNA tests, which examine the genetic information stored in a cellular structure called a mitochondrion, and what are called Y-line tests, which look at markers on the Y-chromosome passed from father to son. These tests have been widely used to examine people’s ancestral heritage. Since certain genetic variations are typical in certain areas, geneticists can use an individual’s DNA to estimate where their ancestors came from. But when this technique is used to look at someone’s nationality rather than the origin [more...]

Date: 2009-12-30 06:05:09


How Crick and Watson's DNA lab was a hive of genius - and sexism

A batch of "lost" letters written 50 years ago has cast new light on the intense and sometimes bitter rivalries behind one of the greatest achievements of the scientific age - the discovery ... Wed 29 Sep 10 from The Independent Letters show strain in DNA team Newly-found letters of British scientists behind the discovery of the structure of DNA highlight tensions around this major scientific breakthrough. Wed 29 Sep 10 from BBC News Unread correspondence of Francis Crick: New twists in double helix discovery story are uncovered The story of the double helix's discovery has a few new twists. [more...]

Date: 2010-09-29 21:46:50


Startsateight » Blog Archive » Hip Homeschool Hop ~ 10-13-10 ...

I have spent a bunch of time searching YouTube for some videos to cover the topic of cell structure and DNA as well.  Here is a list of ones I felt were doable for a middle school aged student, some are more basic than others.  We are going to try to start out with some of the easier to understand, more basic ones, and then move to the slightly more complex ones if we have the time and interest. Cells: Parts of an Animal Cell Through the Virtual Cell Parts of a Cell Cell Parts and Functions Parts of a Cell DNA: DNA Video – Simple Science DNA Structure The DNA Song “The Gene [more...]

Date: 2010-10-12 20:06:59


Science Literature - "Truth be told" about Chimp-Human DNA comparisons

"Truth be told" about Chimp-Human DNA comparisons 07/02/07 For over 30 years, the public have been led to believe that human and chimpanzee genetics differ by mere 1%. This 'fact' of science has been used on innumerable occasions to silence anyone who offered the thought that humans are special among the animal kingdom. "Today we take as a given that the two species are genetically 99% the same." However, this "given" is about to be discarded. Apparently, it is now OK to openly acknowledge that those who are involved in this research have never been comfortable that the 1% figure was an [more...]

Date: 2007-07-02 12:37:52


Nanotechnology Now - Press Release: "ONR grant contributes to work ...

"It is an honor for Navy science and technology to be associated with Nobel-caliber scientists," said Chief of Naval Research Rear Adm. Nevin Carr. "This underscores the quality of our scientists and also ONR's deep commitment to encouraging ... For nearly a decade, Baatar has championed two major research initiatives as part of his nanoelectronics program portfolio: One is graphene electronics and the other in structural DNA nanotechnology, both of which have been [more...]

Date: 2010-10-11 17:28:27


AIPMT Biology Syllabus

DNA –its organization and replication; Transcription and Translation; Gene expression and regulation; DNA fingerprinting. Theories and evidences of evolution, including modern Darwinism. Unit : 4 Structure and Function – Plants Morphology of a flowering plant; Tissues and tissue systems in plants; Anatomy and function of root, stem(including modifications), leaf, inflorescence, flower (including position and arrangement of different whorls, placentation), fruit and seed; Types of fruit; Secondary growth; Absorption and movement of water (including diffusion, osmosis and water [more...]

Date: 2010-10-07 14:07:00


Letters of DNA hunters reveal twists - Arkansas Online

The drama that surrounded Francis Crick and James Watson’s 1953 unveiling of the structure of DNA is no secret — Watson described the heated competition between two British research groups in his best-selling book, The Double Helix. This story is only available from the Arkansas Online archives. Stories can be purchased individually for $1.95. Click the link below to search for this story in the archives. If the search doesn't yield any results, contact the Arkansas Democrat-Gazette library at (501) 378-3851 with the section, date and page information below. » Click here to search the [more...]

Date: 2010-10-03 09:00:49


Reversing the Effects of Aging | Diet, Health and Nutrition News

Free radicals can wreak havoc with DNA, altering its structure and causing mutations during cell replication. While free radicals are unavoidable, there are a number of changes you can make to offset the dangerous effects. ... Sugar mixes with proteins in our body to create non-functional structures call advanced glycation end products (AGE's) which accelerate the aging process. AGE's enter our body either pre-formed from over cooked, browned foods or as a result of [more...]

Date: 2010-10-11 18:25:20


WHATAQUEEN.COM - Timeline of United States discoveries | Move Over ...

In 1953, based on X-ray diffraction images and the information that the bases were paired, James D. Watson along with Francis Crick discovered what is now widely accepted as the first accurate double-helix model of DNA structure. ..... National Inventors Hall of Fame Science and technology in the United States Technological and industrial history of the United States Timeline of United States inventions. United States Patent and Trademark Office Yankee ingenuity [more...]

Date: 2010-10-11 20:14:30


How is the structure of DNA similar to a spiral staircase? | http ...

The double helix structure of DNA has been compared to a spiral staircase. What components make up the sides of the staircase and what component makes up the steps? What types of bonds hold the sides together and the steps [more...]

Date: 2010-09-19 03:36:16



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