Predict the phenotypes and phenotype frequencies

Reference no: EM1392279

1) In labrador retrievers, two alleles interact to produce coat color. The (A) allele is dominant to the (a) allele and produces a black coloration. The(a) allele when homozygous produces a brown coloration. The (b) allele is recessively epistatic to the (A) allele and produces a golden color when homozygous.
You have a littler of pups: 8 golden, 6 black, and 2 brown. What were the genotypes and phenotypes of the parents?

2) In the common mouse species, Mus musculus, the mutant yellow fur gene is dominant to the allele for normal (agouti) fur color. When homozygous, the yellow fur gene is lethal. A male yellow mouse has type A blood and had parents who were type AB and type O. This male is then crossed with a female who is also yellow and has type O blood. Predict the phenotypes and phenotype frequencies of all possible living offspring.

Reference no: EM1392279

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