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Few clues about African ancestry to be found in mitochondrial DNA
October 12, 2006Mitochondrial DNA may not hold the key to your origins after all. A study published today in the open access journal BMC Biology reveals that fewer than 10% of African American mitochondrial DNA sequences analysed can be matched to mitochondrial DNA from one single African ethnic group. There has been a growing interest in the use of mitochondrial DNA to trace maternal ancestries, and several companies now offer to analyse individuals' mitochondrial DNA sequences to obtain information about their origins. The current study suggests that only one in nine African Americans may be able to find clues about where their ancestors came from, in their mitochondrial DNA.
Bert Ely, from the University of North Carolina, and colleagues from other Universities in the USA analysed a database of the human variable region, or HVS-1 region, of mitochondrial (mt) DNA sequences from sub-Saharan Africa. They then compared two samples of African American mt DNA sequences to the database, to identify exact matches to the sub-Saharan sequences.
Ely et al.'s results show that more than half of the African American HSV-1 sequences were found in many different sub-Saharan ethnic groups. Forty percent of the African American HSV-1 sequences did not match any sequences in the database and fewer than 10% were an exact match to a sequence from a single African ethnic group.
BioMed Central
BioMed Central
Mitochondrial Dna Current Events and Mitochondrial Dna News RSSUnknowlingly consuming endangered tuna
While most of us would never willingly consume a highly endangered species, doing so might be as easy as plucking sushi from a bento box.
Tags reveal white sharks have neighborhoods in the north Pacific, say Stanford researchers
The white shark may be the ultimate loner of the ocean, cruising thousands of miles in a solitary trek, but a team of researchers has discovered that the sharks have maintained such a consistent pattern of migration that over tens of thousands of years the white sharks in the northeastern Pacific Ocean have separated themselves into a population genetically distinct from sharks elsewhere in the world.
The first men and women from the Canary Islands were Berbers
A team of Spanish and Portuguese researchers has carried out molecular genetic analysis of the Y chromosome (transmitted only by males) of the aboriginal population of the Canary Islands to determine their origin and the extent to which they have survived in the current population.
Whale-sized genetic study largest ever for southern hemisphere humpbacks
After 15 years of research in the waters of the South Atlantic and Indian Oceans, scientists from the Wildlife Conservation Society, the American Museum of Natural History, and an international coalition of organizations have unveiled the largest genetic study of humpback whale populations ever conducted in the Southern Hemisphere.
Barcoding endangered sea turtles
Conservation geneticists who study sea turtles have a new tool to help track this highly migratory and endangered group of marine animals: DNA barcodes.
Dog's place and date of birth identified
Earlier studies of this field have shown that Eastern Asia is the place where the wolf was tamed to become the dog.
Discovery of genetic mutation in Leigh syndrome
Researchers at the Montreal Neurological Institute and Hospital (The Neuro), McGill University have discovered a genetic mutation underlying late-onset Leigh syndrome, a rare inherited metabolic disorder characterized by the degeneration of the central nervous system.
New insect on Balearic Islands
After 10 years of biochemical and molecular analysis of the Tyrrhenoleuctra plecoptera that live in the Western Mediterranean, Spanish and Italian scientists have now demonstrated that one of the insect populations of this group is a distinct and, therefore, new species.
Neurological disorder in golden retriever dogs caused by a mutation in mitochondrial DNA
Sensory ataxic neuropathy (SAN) is a recently identified neurological disorder in Golden Retriever dogs with onset during puppyhood.
Mysterious disappearance of explorer Everett Ruess solved after 75 years
The mysterious disappearance of Everett Ruess, a 20-year-old artist, writer and footloose explorer who wandered the Southwest in the early 1930s on a burro and who has become a folk hero to many, has been solved with the help of University of Colorado at Boulder researchers and the National Geographic Society.
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60 Minutes - Roots (October 7, 2007) Airdate: 10/07/07 Marion West, a Missouri rancher, and Vy Higginsen, a New York City gospel director, never knew they were related until a blood test traced their ancestry back generations and found a common caucasian relative. The problem is, similar tests also told Vy she had ancestors in numerous African tribes and various countries. Lesley Stahl reports on this new field of genetic genealogy, which some say promises its customers more than it can deliver. This product is manufactured on demand using DVD-R recordable media. Amazon.com's standard return policy will apply. |
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Investigation of congeneric hybridization in and stock structure of weakfish (Cynoscion regalis) inferred from analyses of nuclear and mitochondrial DNA loci *.: An article from: Fishery Bulletin by Jan F. Cordes (Author), John E. Graves (Author) This digital document is an article from Fishery Bulletin, published by National Marine Fisheries Service on April 1, 2003. The length of the article is 6255 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser. Citation Details Title: Investigation of congeneric hybridization in and stock structure of weakfish (Cynoscion regalis) inferred from analyses of nuclear and mitochondrial DNA loci *. Author: Jan F. Cordes Publication: Fishery Bulletin (Refereed) Date: April 1, 2003 Publisher: National Marine Fisheries Service Volume: 101 Issue: 2 Page: 443(8) Distributed by Thomson... | |
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Mitochondrial DNA and prehistoric settlements: native migrations on the western edge of North America.: An article from: Human Biology by Jason A. Eshleman (Author), Ripan S. Malhi (Author), John R. Johnson (Author), Frederika A. Kaestle (Author), Joseph Lorenz (Author), David Glenn Smith (Author) This digital document is an article from Human Biology, published by Wayne State University Press on February 1, 2004. The length of the article is 8275 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser. From the author: KEY WORDS: COASTAL MIGRATION, MITOCHONDRIAL DNA, HYPERVARIABLE SEGMENT 1 (HVS1), HOKAN, PENUTIAN, UTO-AZTECAN, LINGUISTIC DIVERSITY, CENTRAL VALLEY OF CALIFORNIA, GREAT BASIN, COLUMBIA PLATEAU, NATIVE AMERICAN GENETICS Citation Details Title: Mitochondrial DNA and prehistoric settlements: native migrations on the western edge of North America. Author: Jason A.... |
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