in labrador retrievers, the dominant form of the borwn gene, B, is required for black fur
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Coat color in Labrador retrievers: the B gene, the allele B (black) is dominant to b (brown) the E gene, the allele E (pigment deposition) is dominant to e (no pigment deposition—yellow) A yellow lab and a brown lab have many litters of pups together. All the puppies are black labs. Determine the genotype of the brown lab. bbEe BbEE BbEe bbEE
Sri K.
Jenny W.
In Labrador retrievers, fur color is controlled by two genes. One gene controls pigment production, with the dominant B allele producing black pigmentation and the recessive b allele producing brown pigmentation. The other gene controls the deposition of the pigment in the hair, with the dominant E allele producing a functional transport system and the recessive e allele producing a nonfunctional transport system. Which of the following genotypes belongs to a true-breeding yellow lab, i.e. a lab that always produces yellow offspring when bred with another lab of the same genotype?
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