What proportion of the f2 kittens is expected to be black

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Reference no: EM133561784

Question 1. Consider the following cross: AABBCcDD x aabbCcdd.

Genes A and gene B both exhibit complete dominance (A dominant to a, B dominant to b).

Gene C and gene D both exhibit incomplete dominance.

Assume all genes show 100% penetrance and assort independently.

How many different phenotypes are possible in the offspring?

Question 2. In cats, locus B has three alleles in a dominance series: B (black) > b (brown) > bl (light brown)

Locus C has four alleles in a dominance series: C (full color) > cb (Burmese) = cs (Siamese) > c (albino)

Locus C is epistatic to locus B. For example, cats that are homozygous for the c allele are albino, regardless of their genotype at Locus B.

True-breeding brown cats are mated with albino cats that are all homozygous for black alleles.

The F1 kittens from these matings are all black.

Each F1 cat is mated to another F1 cat to produce the F2 offspring.

What proportion of the F2 kittens is expected to be black?

Reference no: EM133561784

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