Sentences with phrase «pigmentation genes»
"Pigmentation genes" refers to the specific genes that are responsible for determining the color of an organism's skin, hair, or eyes. These genes control the production of pigments, such as melanin, which give these body parts their different shades and colors. Full definition
Two pigmentation genes in particular are often associated with deafness in dogs: the merle gene (seen in the collie, Shetland Sheepdog, Dappled Dachshund, Harlequin Great Dane, American Foxhound, Old English Sheepdog, and Norwegian Dunkerhound among others) and the piebald gene (Bull Terrier, Samoyed, Greyhound, Great Pyrenees, Sealyham Terrier, Beagle, Bulldog, Dalmatian, English Setter).
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A groundbreaking study finds light skin pigmentation gene variations originating in Africa, eroding the notion of race as a biological characteristic, and shedding light on cancer and evolution, too.
Previous studies of a skin pigmentation gene called MC1R had led many geneticists to think that dark skin colour — which is thought to protect against UV damage — is a fixed and consistent trait in all people of African descent.
Researchers have found evidence that pigmentation genes differ between domestic and wild animals.
Using forensic techniques, they isolated DNA for several known pigmentation genes from the samples.
This work could shed light on how pigmentation genes have adapted to external environments.
Congenital hereditary deafness in most dog breeds is associated with 1 of 2 classical pigmentation genes responsible for white or light skin and fur coloration: piebald and merle.1 The pigment locus S has 3 recessive alleles: Irish spotting, piebald, and extreme piebald; dogs with the dominant allele have solid color.
He argues that some pigmentation genes have such a powerful effect that they override the combined contributions of many weaker genes — a phenomenon that would render the new study's simple gene addition inaccurate.
Analysis of a pigmentation gene in Neandertals suggests that the extinct hominids had humanlike skin color patterns
The same study found that in Shetland Sheepdogs a mutation of the pigmentation gene known as Silver (or Silv) is probably responsible for the merle pattern.
Fang believes that something specific to Qinling — a variation in climate or a chemical in the environment — could influence the bears» pigmentation genes.