Latest Genetic variation Stories

2013-06-11 21:08:00

Individuals of a particular species generally differ from one another. We are clearly most adept at recognizing members of our own species, although dog and cat owners will be ready to confirm that their pets look unique. Differences within species relate to characteristics such as size and shape but also to color: it is not only humans that show a wide range of skin pigmentation. Nevertheless, the cause of the variation in skin color in animals has remained largely a matter for conjecture....

Gene Mutations Begin Showing Up In Last 5,000 Years Of Human Evolution
2012-11-29 10:51:10

Lawrence LeBlond for redOrbit.com - Your Universe Online In a world that´s more than 4 billion years old, humans have only existed for a fraction of that–roughly 200,000 years. In those 200,000 years of existence, not a lot is known about genetic mutation until we close in on the last 5 to 10 thousand years. It is within that time that researchers believe nearly 75 percent of gene mutations have occurred, making our DNA distinctly different now than it was way back when. This...

Insights Into Primate Diversity Learned From The Rhesus Macaque
2012-06-29 09:27:37

New research published in BMC Genetics shows that the rhesus macaque has three times as much genetic variation than humans. However despite much of this extra variation being within genes, it does not affect protein function. Consequently damaging variations are at similar levels in macaques and humans - indicating a strong selection pressure to maintain gene function regardless of mutation rate or population size. Humans and rhesus macaques shared a common ancestor approximately 25...

2012-05-24 20:08:53

UCLA-Tel Aviv University team models genetic variation in 2-D, 3-D space Understanding the genetic diversity within and between populations has important implications for studies of human disease and evolution. This includes identifying associations between genetic variants and disease, detecting genomic regions that have undergone positive selection and highlighting interesting aspects of human population history. Now, a team of researchers from the UCLA Henry Samueli School of...

Transformational Fruit Fly Genome Catalog Completed
2012-02-09 05:08:03

Scientists searching for the genomics version of the holy grail — more insight into predicting how an animal's genes affect physical or behavioral traits — now have a reference manual that should speed gene discoveries in everything from pest control to personalized medicine. In a paper published Feb 8 in Nature, North Carolina State University genetics researchers team with scientists from across the globe to describe the new reference manual — the Drosophila...

Clusters Of Genes Determine Who Will Reach 100
2012-01-20 06:22:57

Scientists now boast that they can predict who will live to be 100 with astounding accuracy using on a complex review of genetic markers for healthy aging. A team of Boston University researchers devised the genetic formula for longevity based on a detailed study of the DNA of centenarians. Their research, published in PLoS ONE, focused on identifying common genetic variations thought to be associated with healthy aging in over 800 centenarians and 914 healthy subjects of varying ages....

2011-11-24 11:27:46

We all understand that genetics determine our height, but scientists want to dig in deeper and find which genes might be directly responsible. Scientists have released a study, published by Cell Press in the December issue of the American Journal of Human Genetics, suggesting that uncommon genetic deletions are associated with short stature. Researchers are focusing on genetic abnormalities, known as copy number variants (CNV), which are alterations within the chromosome that determine if...

Are Genes Our Destiny
2011-09-18 06:30:55

  Salk scientists discover 'hidden' code in DNA evolves more rapidly than genetic code A "hidden" code linked to the DNA of plants allows them to develop and pass down new biological traits far more rapidly than previously thought, according to the findings of a groundbreaking study by researchers at the Salk Institute for Biological Studies. The study, published Sept. 16 in the journal Science, provides the first evidence that an organism's "epigenetic" code - an extra layer of...

2010-09-30 06:15:00

Researchers from more than 200 institutions in the U.S. and Europe have identified hundreds of genetic variants that in total account for roughly 10 percent of the inherited variation in human height. The consortium of researchers, named GIANT for Genetic Investigation of ANthropometric Traits, combined data from more than 180,000 individuals, including millions of genetic results from each of 46 separate studies in the U.S., Canada, Europe and Australia. Using this data, they were able to...

2010-09-13 19:20:42

Two Belize Populations Offer Opportunity in a Desert of Genetic DiversityThe first genetic study to compare nuclear DNA of endangered Antillean manatees in Belize with Florida manatees confirmed their designation as separate subspecies. Belize's manatees, however, were found to have extremely low genetic diversity, raising questions about their long-term genetic viability.The Central American country of Belize hosts the largest known breeding population of Antillean manatees and is touted by...

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