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Tag: "ancestry" at biology news

International HapMap consortium expands mapping effort

... Yoruba in Ibadan, Nigeria and Utah residents with ancestry from northern and western Europe. No medical or personal identifying information was obtained from the 270 donors. However, the samples are identified by the population from which they were collected. Although any two people are 99.9 percent identic...

Surprising findings reported about iron overload

...Celtic origins, with some counties reporting Irish ancestry in 17 percent of the population. "The hemochromatosis C282Y mutation is thought to have occurred among Celtic or Scandinavian populations 1,500-3,000 years ago, and the mutation may have helped them survive iron-poor diets." Hemochromatosis or iron ...

Great White shark evolution debate involves WSU Lake Campus geology professor

...from the huge prehistoric megladon shark or if its ancestry rests with the mako shark. "Most scientists would probably say the Great Whites evolved from the megladon line, which existed from two million to twenty million years ago. They were huge sharks, approximately the length of a Greyhound bus and posses...

Study reveals dramatic difference between breast cancers in US and Africa

... and North America has found that women of African ancestry are more likely to be diagnosed with a more virulent form of the disease than women of European ancestry. Researchers from the University of Chicago, working with colleagues at the University of Calabar in Nigeria and the University of North Carolin...

The biggest family tree ever

...Family Tree DNA, a company specializing in tracing ancestry using genetics. The company has been contracted to process the samples in the Genographic Project. Hammer is a consultant for and holds stock in the company. UA will not generate profits from the project. People who wish to participate in the Genogr...

Genetic link confirmed between Polynesians and indigenous Taiwanese

...w provide the first direct evidence for the common ancestry of Polynesians and indigenous Taiwanese. Genetic techniques involving mitochondrial DNA (mtDNA) have been used to try and determine whether there is a link between Polynesians and other Southeast Asian populations by estimating how much mtDNA differ...

High-Throughput GoMiner

...w provide the first direct evidence for the common ancestry of Polynesians and indigenous Taiwanese. Genetic techniques involving mitochondrial DNA (mtDNA) have been used to try and determine whether there is a link between Polynesians and other Southeast Asian populations by estimating how much mtDNA differ...

New classification of eukaryotes has implications for AIDS treatment, agriculture and beyond

... causative agent of malaria, is now known to share ancestry with photosynthetic organisms and has a vestigial chloroplast, called the apicoplast. This knowledge opens exciting possibilities for novel drug therapies. The clusters are 1) the Opisthokonta, grouping the animals, fungi, choanoflagellates, and Me...

Scientists pinpoint inflammation gene

...s study population is largely of Northern European ancestry and has a high incidence of diabetes and obesity. Scientists worked with 522 individuals from 92 families in the TOPS program, sequencing their entire SEPS1 gene and identifying all the genetic variations among individuals. These molecular genetic ...

Whole-genome study at Johns Hopkins reveals a new gene associated with abnormal heart rhythm

...ed studies, about 1800 American adults of European ancestry from the Framingham Heart Study of Framingham, Mass., and about 6,700 German adults from the KORA-gen study of Augsburg, Germany. The research team then searched for any specific DNA sequences that showed up more frequently in people who have longe...

World Trade Center identifications pushed forensic DNA technology

...mitochondrial DNA is not unique -- entire maternal ancestry lines share the same mtDNA -- it, along with STR, could help in identification. SNPs, or single nucleotide polymorphisms, are genetic variations that occur at a single DNA location. While standard practice requires only 13 STRs to identify an indiv...

Evolution mystery: Spider venom and bacteria share same toxin

...t found in any other proteins. Evidence for common ancestry (homology) of the toxins had previously been noted...otifs in proteins to answer questions about common ancestry when gene sequences are too different to be clear about these relationships." "We're still left ...

New findings offer more complete view of breast cancer gene mutations in US population

...ts (1.4 percent). Breast cancer patients of Jewish ancestry were also significantly more likely to have BRCA1 mutations than non-Jewish patients ?10.2 percent compared to 2.0 percent. For BRCA2, African American patients were slightly more likely to have mutations, 2.6 percent, than were white patients, 2.1 p...

Researchers make progress in studying genetic traits of India-born populations

...erally, South Asia, make up one of the major human ancestry groups, with relatively little genetic differentiation among the Indian populations. Although the study used participants that may not reflect a random sample from India, these results still suggest that the frequencies of many genetic variants are d...

New evidence of 'human' culture among primates

... as more evidence emerges, it is hoped the ancient ancestry of human behaviour will become clear. ...

World's largest flower evolved from family of much tinier blooms

...cal tree of life in the past 25 years have tracked ancestry using molecular markers in genes governing photosynthesis. Rafflesia is a non-photosynthetic parasite, and those genes have apparently been abandoned, meaning that to determine its lineage we had to look at other parts of the plant's genome." Davis...

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