Our blogs and videos choice: mtdna

Eastman's Online Genealogy Newsletter: Familybuilder Introduces ...

”We are very excited by the reception we received for our highly affordable DNA test kit by the 250+ attendees of the conference.  To date, using DNA testing for genealogy purposes has been cost prohibitive. Now, with our DNA test priced under $60.00, we’re opening the doors of DNA-based genealogy research up for millions of people.  Thank you for welcoming our family into yours, ISGS!” By combining its social networking prowess with over 20 million family tree profiles built across its global network via Facebook, MySpace, Bebo, Orkut and Hi5, and the lowest price point found [more...]

Date: 2008-10-25 15:17:46

Blog posts (78) | Videos (19)
 


The Journey of Man: A Genetic Odyssey

A very nice book if one is interested in understanding how DNA analysis is being used to trace human migration and from where it started. Would like more substance. There is no in-depth explanation of mitochondrial DNA dating, Y-chromosome dating, etc. More red meat than Seven Daughters of Eve for sure! Does this book have. Interesting. I thought it was a good book- and being a molecular biologist who is familiar with the worlds advanced knowledge of genetics, I am quite comfortable with my African origins and the obvious fact that we (meaning all races) are all extremely similar. Fascinating [more...]

Date: 2010-05-23 10:41:42


Eastman's Online Genealogy Newsletter: GeneTree is Now Out of Beta

A new Y-DNA genetic test enables individuals to research paternal line connections of a male relative, and complements GeneTree’s existing maternal line mtDNA test. Y-DNA results show ancestry and connections to DNA cousins within the past few hundred years.The opportunity to find and connect with “lost” or unknown extended family members through the world’s most extensive correlated genetic genealogy database is a compelling GeneTree feature. “My 82-year-old mother was almost in tears when I told her we had found a branch of our family that we had lost touch with long ago,” said [more...]

Date: 2009-03-09 18:36:04


S116/P312 not so much Bell Beaker perhaps Linearbandkeramik?

I was over at Family Tree DNA Forums and a fellow posted this: European Journal of Human Genetics advance online publication 25 August 2010; doi: 10.1038/ejhg.2010.146 A major Y-chromosome haplogroup R1b Holocene era founder effect in Central and Western Europe Natalie M Myres et al. The phylogenetic relationships of numerous branches within the core Y-chromosome haplogroup R-M207 support a West Asian origin of haplogroup R1b, its initial differentiation there followed by a rapid spread of one of its sub-clades carrying the M269 mutation to Europe. Here, we present [more...]

Date: 2010-08-26 10:54:31


Scientists Develop Breakthrough Technique to Prevent Mitochondrial ...

A team of researchers from the Newcastle University have developed a pioneering ‘three-person IVF’ technique, in which the fertilization procedure uses the nuclear DNA of the biological parents, and the mitochondrial DNA (mtDNA) from an oocyte donor. The technique, which facilitates exchange of DNA between two oocytes, could serve in preventing the transmission of mitochondrial diseases to offspring. The findings of the groundbreaking study have been published in the online edition of the journal, Nature. Only registered users can view full text of articles posted in the last 6 months. [more...]

Date: 2010-07-16 20:00:57


race/history/evolution notes: Highly divergent ancient hominin ...

Svante Paabo assumes "some new creature" "carried this mitochondrial genome out of Africa about a million years", as do most commentators. It strikes me that a multiregionalist explanation is as consistent if not more consistent with the evidence at hand. If we entertain the possibility that "African Eve" ultimately descends from Eurasian Homo erectus, we don't need to posit some unknown intermediate "out of Africa" event. Reference: Johannes Krause, Qiaomei Fu, Jeffrey M. Good, Bence Viola, Michael V. Shunkov, Anatoli P. Derevianko & Svante Pääbo. The complete mitochondrial DNA genome of [more...]

Date: 2010-03-25 03:22:00


Ancestry DNA Testing

DNA research worldwide led to the discovery of genetic markers that are used to evaluate ancestry. These markers follow three types of inheritance pattern categories. These are autosomal DNA line, the paternal DNA line and maternal DNA line. The autosomal DNA line is made of all DNA in the cells excluding the X – chromosome, Y – chromosome and mtDNA. A person inherits half of autosomal DNA from the biological mother and the other half from the biological father. The Y chromosome markers are paternally related and passed from a father to his son. They are used to trace a person’s [more...]

Date: 2010-09-25 18:36:37


Book Review: Trace Your Roots With DNA

Trace Your Roots With DNA by Megan Smolenyak Smolenyak is a nice book for an overview of the field of genetic genealogy testing. It goes into detail describing the process of DNA testing and discusses what you can expect to learn from Y-DNA and mtDNA testing. Beyond that, Megan has a nice section on starting a group project and has information about where you can locate others in your same haplogroup or surname. Lots of good information here. My Opinion: Here's another good overview book that is successful at reducing the sci-cho babble to genealogy-speak. It's a book genealogists will be [more...]

Date: 2008-03-20 19:36:00


History Channel indicates first Native Americans were European

Scientists have recently discovered that "prior" to Asians crossing the Bering Strait about 10,000 B.C. to 15,000 B.C. (bringing us today what DNA testing companies consider "Native American") about 20,000 B.C. to 25,000 B.C. there was a migration out of Southwestern Europe of peoples of European origin who made their way along the Ice Sheets in boats in the Atlantic Ocean who settled in the Eastern United States. The oldest spearpoints ever found in North American have SW European origins not Asian origins - therefore, once again - if your family was from the eastern U.S. or eastern Canada [more...]

Date: 2010-10-07 17:46:00


Family Tree DNA: What's happening in Houston?

Tracing the the Tribe just received the latest update from Family Tree DNA on what's been happening in Houston following Hurricane Ike and some issues impacting the company. In general, things are improving. According to president Bennett Greenspan and vice president of operations and marketing Max Blankfeld: a) The 5th Annual Conference on Genetic Genealogy will be postponed until February or March 2009, as the Sheraton Hotel has just informed us that they will not be in an appropriate condition to host our conference. The positive aspect of this postponement is that we will try our best to [more...]

Date: 2008-09-21 04:36:00


Dienekes' Anthropology Blog: DNA tests for asylum seekers

ScienceInsider has some reactions to plans from the UK Border Agency to use DNA tests to verify claims of asylum seekers that they do in fact come from the countries they claim (e.g., Somalia), rather than other ones which do not face the same geopolitical turmoil. This is a real problem for European countries, as many illegal immigrants without documents claim to be from war-zones. I am completely in agreement with the use of DNA tests to substantiate asylum seekers' claims, with the caveat that the followed protocols should be transparent to the scientific community, so that they can be [more...]

Date: 2009-10-01 08:00:00


CSIRO PUBLISHING - Australian Journal of Zoology

Divergent lineages in the heath mouse (Pseudomys shortridgei) are indicative of major contraction to geographically isolated refugia on the eastern and western sides of Australia during the early Pleistocene Maria Salinas A, Michael Bunce B, Damien Cancilla B, Deryn L. Alpers B and Peter B. S. Spencer B C A Departament de Ciència Animal i dels Aliments, Facultat de Veterinària, Universitat Autònoma de Barcelona, 08193 Bellaterra (Barcelona), Spain. B Biological Sciences and Biotechnology, Murdoch University, Murdoch, Perth, Western Australia 6150, Australia. C [more...]

Date: 2009-05-25 14:00:45


Week of Winners Giveaway #6: GeneTree

What do you get when you combine mouth wash, genealogy, and science together in one package? The GeneTree DNA Test Kit* Are you saying, “Huh?” right about now? Well stick with me. When the folks at GeneTree approached me with this giveaway, my response was about the same. I mean, let’s face it–my experience with DNA would be limited to an evening with CSI Miami and Horatio Caine…hmmm…not a bad thought, but not where we’re headed. With the use of a simple mouthwash solution GeneTree will help you discover branches of your ancestry that you may never have know existed. GeneTree [more...]

Date: 2009-09-29 06:20:28


Oditous's 23andme results - ForumBiodiversity.com » Anthropology ...

Got the results today Apparently i'm triracial, most similar with north europeans but cluster with berber Mozabites from africa Maternal and paternal lineages are not really surprising but still kind of unexpected on a subregional scale. Need to do more research on that. At the moment i'm most interested in the 3% Asian admixture. Does anyone know if there's a way to delve deeper into this, even if it's only a small percentage? I'm supposing it's big enough to rule out any possible mistake by 23&me? According to regional breakdown central asians would be the source of my asian [more...]

Date: 2010-01-27 13:29:15


Date: 2010-09-06 18:05:00


High levels of mitochondrial DNA divergence within short - CSIRO ...

Nine mtDNA control region haplotypes were identified within the seven colonies. There were unusually high levels of sequence divergence (up to 6.9%) within colonies at Litchfield NP. This divergence suggests that multiple taxa may exist within what is currently recognised as P. brachyotis. Alternatively, if current taxonomy is correct, the high levels of divergence raise the possibility of ancestral isolation and divergence of populations in allopatry with subsequent admixture at a secondary contact zone. The possibility that these unusually divergent haplotypes result from introgressive [more...]

Date: 2010-06-28 07:00:00


Eastman's Online Genealogy Newsletter: Family Tree DNA Launches ...

Houston, TX – February 16, 2010 - Family Tree DNA, the pioneer and largest DNA testing company for genealogy purposes, is launching today their newest test – named Family Finder – which will allow connecting with family members across all ancestral lines. “This is the most exciting genetic genealogy breakthrough since the company launched its Y-DNA test, which uncovers relatives in the direct paternal line”, says Bennett Greenspan, founder and CEO of Family Tree DNA. Initially available to current Family Tree DNA members, Family Finder will be offered to the general public in [more...]

Date: 2010-02-17 01:32:09


FTDNA Summer Sale 2010 -- Extended

Sorry, I'm still at fiddle camp but until I return, if you've been wanting to test yourself or sponsor another.    Family Tree DNA (the lab we recommend) has just extended their Y-DNA37 test (the test we recommend) through June 30th. Here are the details:           Y-DNA37 for $119    (Regular price would be $149)           Y-DNA67 for $199    (Regular price would be $239)           Y-DNA37+mtDNA for $159    (Combined test would cost $238) Kit must be ordered and paid for by June 30th, 2010 to qualify for the Summer Sale pricing. By way of P.S. and in [more...]

Date: 2010-06-25 22:39:00


FTDNA Family Finder - ForumBiodiversity.com » Anthropology ...

I like what is described in the bold face, it would be quite convenient to be able to have direct contact with project members, but for myself it won't be of much use considering only a fraction of my cousins are FTDNA users and I already have my genealogy composed. It would be quite useful for others though who are interested in contacting those long lost cousins and such. One thing I do like is this could lead to more security when sharing GEDCOM's and such, with things like Ancestry.com your files, if made public, can be downloaded and viewed by anyone, this Family Finder thing could help [more...]

Date: 2010-02-16 22:00:09


2010 Saturday Seminar Topics – Got Ancestors?! 2010

Come hear one of the co-authors of Trace Your Roots with DNA discuss her own and others’ experience launching and managing a DNA project, including such considerations as test and vendor selection factors, privacy, and convincing others to participate. (Short and long versions available: one-hour version covers Y-DNA/surname testing only, while the extended 1.5-2 hour version also includes other types of testing, such as mtDNA, BioGeographical, etc. Also available for non-genealogical audiences.) Right Annie, Wrong Annie An Irish lass, Annie Moore, tripped down a gangplank and into the [more...]

Date: 2010-05-16 03:19:31


Tribal DNA Test How Different American Indian Tribes Have ...

Generations of American families in the United States sometimes believe that they have Native American blood in their genes. If traditional research methods fail to produce any information, a DNA test may be just the thing you should try.Here are some things you should know about DNA testing and how it may determine which American Indian tribe you belong to:1. A DNA test can determine two of an individual’s many lineages.One way to determine a lineage is the mtDNA or the mitochondrial DNA test, which traces the genetic lineage along the maternal line. The Y chromosome DNA test, on the other [more...]

Date: 2010-09-10 07:46:18


Family Tree DNA Reporting in From Houston

As a follow-up to our letter informing you of the level of preparedness Family Tree DNA established regarding the coming of Hurricane Ike to Houston, we are coming to you now to update you on our status post-Ike. a) As you may know, all of our standard Y-DNA and mtDNA tests are processed at the lab in Arizona, and therefore, this processing has not been affected at all. b) Also, as we advised previously, we have taken appropriate measures to safeguard and protect the data and our servers and therefore all computer systems are in place and functioning normally. You may have noticed that our [more...]

Date: 2008-09-15 05:17:00


Lactic acidemia in the pathogenesis of mice carrying mitochondrial ...

Lactic acidemia is one manifestation of the mitochondrial diseases caused by pathogenic mutant mitochondrial DNA (mtDNA). However, little is known about its chronic effects in the progression of mitochondrial disease phenotypes. To obtain experimental evidence on this point, we used trans-mitochondrial model mice (mito-mice) heteroplasmic for wild-type and deleted mtDNA (ΔmtDNA). Mito-mice carrying predominantly ΔmtDNA showed mitochondrial respiration defects and the resultant disease phenotypes, including lactic acidemia; they also showed a decrease in mitochondrial biogenesis regulated by [more...]

Date: 2010-06-21 16:20:22


Interleukin-6 is an important mediator for mitochondrial DNA ...

Interleukin-6 is an important mediator for mitochondrial DNA repair after alcoholic liver injury in mice. Hepatology. 2010 Aug 20; Authors: Zhang X, Tachibana S, Wang H, Hisada M, Williams GM, Gao B, Sun Z We investigated the hypothesis that a prominent effect of chronic ethanol consumption is mitochondrial DNA (mtDNA) injury and compared this injury in IL-6 knockout (KO) and wild-type (WT) mice. Ethanol feeding for 4 weeks resulted in steatosis and oxidative mtDNA damage (8-OHdG) in both IL-6KO and WT mice. However, the WT mice were able to repair the injury by increased production of mtDNA [more...]

Date: 2010-10-13 08:54:44


mtDNA Testing

There are currently three levels of testing: HRV1, HRV1 & HRV2 and the Full Mitochondrial Sequence (FMS). The FMS is the most comprehensive and highest resolution mtDNA test. For further clarification,  please watch Sorenson's animation on mtDNA. Further reading: The differences between X Chromosome Testing and mtDNA [more...]

Date: 2010-06-10 05:40:00


Dienekes' Anthropology Blog: Forensic informativeness of mtDNA ...

mtDNA haplogroup H occurs very frequently in Caucasoids. This means that even if additional HVRI/HVRII information is known, there is still a high probability that two H samples with the same mutations in the hypervariable regions may not in fact be closely related. Testing for the sub-haplogroups of H is a way in which additional information about haplogroup H samples may be obtained. The authors find that this is quite useful and that the distribution of H sub-haplogroups is significantly correlated with geography. From the article: Most of the European populations sampled display an [more...]

Date: 2005-08-03 03:02:00


Lens. Hyperbaric oxygen. Oxygen-induced changes. DNA repair enzymes.

“Therefore, mitochondrial DNA (mtDNA) is at particularly high risk of ROS-induced damage.” “Oxidative damage to mtDNA has been implicated as a causative factor in a wide variety of degenerative diseases and aging.” “However, the effect of mtDNA damage to the lens has not been studied.” “The goals of the study were to identify if there was increased mtDNA damage in lens when the eye were exposed to hyperoxic or hypoxic conditions and also to evaluate the changes in gene expression of mtDNA base excision repair (mtBER) enzymes.” “Our data have shown that the damage of mtDNA, [more...]

Date: 2010-10-03 06:46:55


Dienekes' Anthropology Blog: Fine resolution study of mtDNA ...

Haplogroup H (hg H) includes about 40-50% of the West Eurasian mitochondrial DNA (mtDNA) samples investigated so far. In order to enhance discrimination within this haplogroup we selected 45 coding region SNPs that allow to ascribe samples to the main phylogenetic branches of super hg HV (that embraces hg H) and, in particular, to H sublineages with a much finer resolution than previous studies. SNP selection was carried out using the most up-to-date available literature on population and forensic genetics and extended by means of phylogenetic analysis of complete or coding region genomes [more...]

Date: 2006-05-26 16:57:00


Mitochondrial DNA Genealogy

The mitochondrial DNA genealogy is the study of a person’s mother’s family line of maternal ancestors. This DNA is passed down from mother to each of her children exactly as she has it, with no mutations, except in the very rare instances. Because of the traditions in our society of the wife taking her husband’s last name, a surname genealogy trace of the female line of the family tree is more difficult. On the flip side, since this DNA strand is more stable than the Y DNA, more conclusive results can be determined for the testing of it. The mt-DNA is sometimes referred to as the Full [more...]

Date: 2010-10-05 09:25:26


DNA parentage testing when the alleged parent is deceased – DNA Tests

These types of samples will require mtDNA testing techniques, as opposed to standard STR DNA, but can be useful in determining parentage. Since, often times, success can not be guaranteed with samples of the deceased, it is recommended that one consult with a DNA testing laboratory or expert to be advised of the best option for your specific situation. In some cases, it may be helpful to rely on samples from the alleged parent’s family members, which can sometimes indirectly establish parentage. About DNAExam The DNA Identity Testing Center of Bio-Synthesis Inc., headquartered in [more...]

Date: 2010-08-12 17:19:40


Cat DNA Can Aid in Criminal Investigations | easyDNA Blog

If you have ever inquired about a hair DNA test or know some of the basics of DNA you may know that DNA is found throughout nucleated cells in the body. Since hairs are simply made up of protein then we know that there is no nuclear DNA in hair. The same applies for cats- there is no nuclear DNA in cat hair. However, cat hair and human hair contain what is known as MtDNA (mitochondrial DNA) and this, like nuclear DNA, is unique to each of us. Cat DNA convicts murderer A body was found in a grave on Prince Edward Island, Canada. Police investigators identified the body as belonging to Shirley [more...]

Date: 2010-05-20 08:24:39


FTDNA Summer Sale 2010

Family Tree DNA (the lab we recommend) has just put their Y-DNA37 test (the test we recommend) on sale for 20 days. Here are the details:           Y-DNA37 for $119    (Regular price would be $149)           Y-DNA67 for $199    (Regular price would be $239)           Y-DNA37+mtDNA for $159    (Combined test would cost $238) The promotion started today, June 5, and will end June 25.    Kits must be paid for by June 30, 2010. Notes you can view any image at full size by clicking on it. I often have links embedded in the text, not always obvious. You [more...]

Date: 2010-06-05 19:00:00


geek speak - Bio-Synthesis, Inc. Begins Mitochondrial DNA Testing

Bio-Synthesis, Inc. begins Mitochondrial DNA Testing or MtDNA, making it one of only a handful of labs to perfect the technology. MtDNA Testing allows Forensic scientist to get a profile from samples that are old or possibly damaged, where the usual technique may not be effective. (Media-Newswire.com) - Recently Bio-Synthesis, Inc. has begun Mitochondrial or MtDNA Testing making it one of only 4 labs in the United States who have perfected the technology and offer it commercially. This expansion has allowed for more varied test options and opens the door to new industries that may benefit [more...]

Date: 2008-12-03 09:43:00


Genome Biology | Full text | Population phylogenomic analysis of ...

The time of divergence between European and Asian pig mitochondrial DNAs (mtDNAs) was long before the time of possible pig domestication, which supported the independent origin of domestic pigs in Europe and Asia . ... The NJ tree of 50 mtDNA genomes (including 24 published near complete sequences; Additional data file 2) revealed two major clades, E and A, which represent the wild boars (Sus scrofa) and domestic pigs from Europe and East Asia, respectively (Figure [more...]

Date: 2007-12-18 08:00:00


How to Maximize Free DNA Testing

DNA testing has not been limited to the study of the human gene, but has also included that of our beloved canines. DNA testing centers for dogs are open to identify the breeds and ancestry of our pets. Free DNA testing also shoots from legal cases with proceedings done underway. DNA testing for these circumstances can include not only the victim and possible suspects but also other individuals present at the crime scene. Some legal reasons that require DNA testing are for alimony or patrimony reasons. In these cases, the genetic markers are looked into to determine, for example, the [more...]

Date: 2010-05-03 22:41:52


Prevalence of Mitochondrial 1555A→G Mutation in Adults of ...

Two of them belonged to mtDNA haplogroup U, two to mtDNA haplogroup J, and one to mtDNA haplogroup H. The haplotype on which the mutation of the sixth carrier occurred could not be determined. All six carriers had audiologic evidence of [more...]

Date: 2009-02-04 21:56:24


FTDNA test sale: June 5th through June 25th

If you are not already in a surname project, you can search for a project using the search box on their web page at http://www.ftdna.com/ Dear Family Tree DNA Group Administrator Last summer we offered a pricing special that was the most successful offering of its type in our company history. Project administrators got behind the recruitment efforts and for those that did, their projects grew and our database grew, so we'd like to offer a summer special again. Here are the details: Y-DNA37 for $119 (Regular price would be $149) Y-DNA67 for $199 (Regular price would be $239) Y-DNA37+mtDNA [more...]

Date: 2010-06-06 13:57:00


Assyrian mtDNA Haplogroup Distribution - ForumBiodiversity.com ...

Excluded one South Asian from the list. And added the following to the totals represented on the graph: Athor - H1 Elias - H36 Sargon999 - H14a Birko19 - T1a Humanist - HV* Final sample count = 40. And yes, I like pictures. (Based on publicly accessible Family Tree mtDNA observations for the participants of the Assyrian DNA Project). Order, in terms of total frequency % 23% H 23% U 15% J 10% HV 10% K 8% T 3% I 3% L1 3% L2 3% L3 3% [more...]

Date: 2010-09-03 07:00:00


What is the mitochondrial disease known as LHON?

LHON is usually due to one of three pathogenic mitochondrial DNA (mtDNA) point mutations. These mutations are at nucleotide positions 11778 G to A, 3460 G to A and 14484 T to C, respectively in the ND4, ND1 and ND6 subunit genes of complex I of the oxidative phosphorylation chain in mitochondria. Men cannot pass on the disease to their offspring. Clinically, there is an acute onset of visual loss, first in one eye, and then a few weeks to months later in the other. Onset is usually young adulthood, but age range at onset from 8-60 is reported. This typically evolves to very severe optic [more...]

Date: 2010-09-15 15:40:13


THE GENOGRAPHIC PROJECT

The Y-DNA is passed on from father to son. The mtDNA is passed on from mother to daughter. The mtDNA is also passed on from mother to son but the son does not pass it on. The Y-DNA and the mtDNA are used to track human [more...]

Date: 2010-10-10 19:53:52


Family Tree DNA Offers Summer Special

Dear Family Tree DNA Group Administrator: Last summer we offered a pricing special that was the most successful offering of its type in our company history. Project administrators got behind the recruitment efforts and for those that did, their projects grew and our database grew, so we'd like to offer a summer special again. Here are the details: Y-DNA37 for $119 (Regular price would be $149) Y-DNA67 for $199 (Regular price would be $239) Y-DNA37+mtDNA for $159 (Combined test would cost $238) Bypass the Y-DNA12 and Y-DNA25, and get the best Genealogy tests on the market! The promotion [more...]

Date: 2010-06-08 04:20:00


Mitochondrial DNA haplogroup H structure in North Africa ...

However, the recent subdivision of the haplogroup H at mitochondrial DNA (mtDNA) level has revealed greater genetic differentiation among geographic regions than previously detected. The dissection of the mtDNA haplogroup H in North [more...]

Date: 2009-04-02 13:05:42


SNGF: Matrilineal Line

According to my DNA test, my Mitochondrial line hapolgroup is H. According to the Haplogroup H Wikipedia entry,  it is the most common mtDNA haplogroup in Europe.  About one half of Europeans are of mtDNA haplogroup H. That does back up the German heritage of my [more...]

Date: 2010-05-09 05:58:18


Eastman's Online Genealogy Newsletter: Family Tree DNA Questions ...

Founded in April 2000, Family Tree DNA was the first company to develop the commercial application of DNA testing for genealogical purposes that had previously been available only for academic and scientific research. Today - with over 300,000 individual records in its Y-DNA and mtDNA databases - and a state-of-the-art Genomics Research Center in Houston, Texas, Family Tree is the prime source for anyone researching recent and distant family [more...]

Date: 2010-09-01 14:48:52


Tracing the Tribe: The Jewish Genealogy Blog: FamilyTreeDNA ...

Family Tree DNA is the prime source for anyone researching recent and distant ties. Founded in April 2000, Family Tree DNA was the first company to develop the commercial application of DNA testing for genealogical purposes that had previously been available only for academic and scientific research. The company has more than 300,000 individual records in its Y-DNA and mtDNA databases - and a state-of-the-art Genomics Research Center in Houston, [more...]

Date: 2010-09-01 13:41:00


Relationship DNA tests: X chromosome Test

Siblings, either male or female, wishing to establish whether they share the same mother (perhaps adopted children) would do a DNA maternity test or even more accurate an MtDNA test (mitochondrial DNA test). Relationship testing, as in the example of 2 females doing an X chromosome test to see if they share the same dad, will never be as accurate as a paternity test. The X chromosome test will show the probability of relationship between two females. No related [more...]

Date: 2010-10-08 10:45:21


Bonobo mtDNA... and some human implications.

It is very apparent that bonobos have three major mtDNA haplogroups, named A, B and C. Unlike humans (or at a lesser extent common chimpanzees), bonobos live in a well defined area of the SW Congo basin, limited by rivers, and have therefore never experienced a expansion since they became separated from their chimpanzee cousins. This makes them a good reference to better understand how demographic expansion affected our genetics, specifically our mtDNA. Chronology The authors say that the most recent common ancestor (MRCA) of all bonobos (by mtDNA) lived some 540,000 years ago (430-670 Ka. [more...]

Date: 2010-09-03 13:52:00


Africanized bee

However, these latter hybrid lines (with European mtDNA) do not appear to propagate themselves well or persist.. In the United States a total of 12 haplotypes of “A” African lineage honey bees have been found using DNA sequencing of a [more...]

Date: 2010-10-09 19:52:13


Why You Should Use DNA Testing in Your Genealogy Research

Mitochondrial testing is utilized for tracing the maternal heritage of a person. The mtDNA testing is very important since genealogists are mostly females. When they marry, maternal lines are often lost because of changing their [more...]

Date: 2010-08-05 10:27:52


Caicó, Rio Grande do Norte, Northeast of Brasil ...

I am sharing with a person from Caicó, in the interior of Rio Grande do Norte (Northeast of Brazil), at 23andme (the DNA testing American lab). Brazilian 22 (European yDNA, and European mtDNA; no recent European immigration) 98,29% European 1,58% Asian 0,13% African I found his results interesting. So here a few pics of that [more...]

Date: 2010-10-13 13:11:20



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