Quantcast

Latest Human genetic variation Stories

2010-02-19 13:57:32

Viruses have played a role in shaping human genetic variability, according to a study published February 19 in the open-access journal PLoS Genetics. The researchers, from the Don C. Gnocchi and Eugenio Medea Scientific Institutes, the University of Milan and the Politecnico di Milano, Italy, used population genetics approaches to identify gene variants that augment susceptibility to viral infections or protect from such infections. Viruses have represented a threat to human populations...

24845d767c476664a1cd673115072d071
2010-02-17 14:38:33

Benefits for human health expected Human genomes from Southern African Bushmen and Bantu individuals have been sequenced by a team of scientists seeking a greater understanding of human genetic variation and its effect on human health. The study's findings will be published in the journal Nature on 18 February 2010. The research was completed by scientists from American, African, and Australian research institutions, with support from Penn State University in the United States and from...

2010-01-26 12:29:37

Scientists at Duke University Medical Center say they are now convinced that rare genetic variants "“ as opposed to more common ones "“ lie at the heart of the genetic component of most common diseases. The finding appearing in PLoS Biology, stems from a series of simulation studies, and challenges common interpretations of a multitude of genome-wide association studies (GWAS) that have identified thousands of single-DNA letter changes associated with greater risk of common...

6e74a3f7608bbaacc0fcee35cb270f1d1
2010-01-14 12:15:48

Genes are being tested for roles in most conspicuous variations among dogs From the Dachshund's stubby legs to the Shar-Pei's wrinkly skin, breeding for certain characteristics has left its mark on the dog genome. Researchers have identified 155 regions on the canine genome that appear to have been influenced by selective breeding. With more than 400 distinct breeds, dogs come in a wide range of shapes, sizes, fur-styles, and temperaments. The curly-haired toy poodle, small enough to sit in a...

2010-01-08 12:38:13

Researchers devise method to pinpoint key genetic variations under positive natural selection that may impact human health Fossils may provide tantalizing clues to human history but they also lack some vital information, such as revealing which pieces of human DNA have been favored by evolution because they confer beneficial traits "” resistance to infection or the ability to digest milk, for example. These signs can only be revealed through genetic studies of modern humans and other...

fa3d9894cb2e93885dfbacb9544e33161
2009-12-21 14:39:25

Collaboration by University of Pennsylvania and Cornell University People who identify as African-American may be as little as 1 percent West African or as much as 99 percent, just one finding of a large-scale, genome-wide study of African and African-American ancestry released today. An international research team led by scientists from the University of Pennsylvania and Cornell University has collected and analyzed genotype data from 365 African-Americans, 203 people from 12 West African...

2009-12-10 14:04:01

73 Southeast Asian and East Asian populations genetically mapped Several genome-wide studies of human genetic diversity have been conducted on European populations. Now, for the first time, these studies have been extended to 73 Southeast Asian (SEA) and East Asian (EA) populations. In a paper titled, "Mapping Human Genetic Diversity in Asia," published online Science on 10 Dec. 2009, over 90 scientists from the Human Genome Organisation's (HUGO's) Pan-Asian SNP Consortium report that their...

2009-11-25 14:54:59

Genome Institute of Singapore researchers compiled map based on genome-wide variations of 6,000 samples The first genetic historical map of the Han Chinese, the largest ethnic population in the world, as they migrated from south to north over evolutionary time. was published online today by the American Journal of Human Genetics by scientists at the Genome Institute of Singapore (GIS). Based on genome-wide DNA variation information in over 6,000 Han Chinese samples from 10 provinces in China,...

ea4c1e19d0ad7457380bbdb93f92067f
2009-11-10 13:34:17

Penguins that died 44,000 years ago in Antarctica have provided extraordinary frozen DNA samples that challenge the accuracy of traditional genetic aging measurements, and suggest those approaches have been routinely underestimating the age of many specimens by 200 to 600 percent. In other words, a biological specimen determined by traditional DNA testing to be 100,000 years old may actually be 200,000 to 600,000 years old, researchers suggest in a new report in Trends in Genetics, a...

2009-10-22 15:31:16

Spend a little time people-watching at the beach and you're bound to notice differences in the amount, thickness and color of people's body hair. Then head to the zoo and compare people to chimps, our closest living relatives. The body hair difference is even more pronounced between the two species than within our own species. Do the same genes cause both types of variation? Biologists have puzzled over that question for some time, not just with respect to people, chimps and body hair, but...


Word of the Day
lambent
  • Licking.
  • Hence Running along or over a surface, as if in the act of licking; flowing over or along; lapping or bathing; softly bright; gleaming.
This word comes the Latin 'lambere,' to lick.
Related