Sentences with phrase «recessive alleles as»
Over the last few decades, inbreeding and loss of genetic diversity have resulted in an increase in the expression of recessive alleles as well as inbreeding depression, which affects things like fertility, puppy mortality, and lifespan.
http://www.instituteofcaninebiology.org/ Not exact matches
As part of their study of genetics, students in Shannon Dziwanowskis seventh - grade science class at Csar Chvez Academy Middle School in Detroit, Michigan, spend the first minutes of class reviewing a worksheet on dominant and recessive alleles, which are alternative forms of genes.
The traditional color, produced when one or both genes have the dominant allele, is commonly referred to as black or black and rust (also called black and tan), while the most common variation, due to both genes having the recessive allele, produces what is called a red or red and rust Doberman in America and a «brown» Doberman in the rest of the world, which is primarily deep reddish - brown with rust markings.
The test Vetgen offers detects the presence or absence of the recessive allele that results in long coats when present in two copies, and as such allows dogs with short coats that carry a hidden «long coat» allele to be detected.
Genetic transmission of deafness in dogs with the recessive alleles of this pigment gene, such as the Dalmatian (which is homozygous for sw), is less clear.
Piebald is a recessive allele of the S gene, where the dominant allele is expressed as a solid color.
The Hairless allele (the wild type) is a dominant (and homozygous prenatal lethal) trait, while the Powderpuff allele acts as a simple recessive trait in its presence.
If a dominant and recessive allele are paired, the dominant trait can override the recessive trait or result in a «mixed» trait that becomes its own phenotype, such as the chocolate Labrador Retriever.
Sometimes, When two recessive alleles are paired, they get superpowers of their own, as with yellow Labradors.
Although the visual effect can be the same, it is easy to confuse this with the subtle hint of bronze (liver) that shows through in coats of some black dogs that carry an incompletely - masked recessive allele (one of the gene pair) for «a dilute» such as liver - chocolate.
In any case, brindle is recessive to black self - color and to saddle patterns (as in GSD, Airedale, Rottweiler), and possibly to the yellow e - allele dog as well.
It seems that, as in other breeds, the br allele lies in between those other two alleles in terms of dominant / recessive «power.»
It is probable that a self - color black with a suppressed brindle allele (genotype AsayEebr or AsAsEebr or AsAsebrebr) would produce brindle pups if mated with an ayayEebr (a fawn that also carries the ebr allele as a hidden recessive) or with an ayayebre (an obvious brindle).
It could be Asee, the combined presence of the dominant black allele at the A locus but with two copies of the recessive «non-extension» allele e at the E locus: the As would try to demand a solid black, but the e on the other locus does not allow that color to be extended to the haircoat.