1. In cats, coat color is controlled by a gene on the X chromosome. Yellow coat...

1. In cats, coat color is controlled by a gene on the X chromosome. Yellow coat color is determined by the b allele and black coat color is determined by the B allele. The heterozygous condition results in a color known as tortoise shell.

a. What phenotypic ratio of offspring would be expected from a cross between a yellow male and a tortoise-shell female?

b. What proportion of the female offspring from a cross between a black female and a yellow male will be tortoise-shell (so, ignore the male offspring)?

2. In a certain species of flower, two autosomal genes, C and R, are both involved in flower color. The dominant C allele confers the ability to produce any color on the petal; cc individuals are white no matter what other genes they express. The dominant R allele produces red petal color; the flowers will be pink if they have two copies of the r allele. For the following cross, what is the phenotypic ratio?

CcRr x Ccrr

Expert Solution

gladiator answered 4 months ago

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