The orange and black pigments in the coats of cats are controlled by an X-linked
ID: 54701 • Letter: T
Question
The orange and black pigments in the coats of cats are controlled by an X-linked pair of alleles where B = orange and b = black. Females heterozygous for these alleles have areas of orange and areas of black (and patches of white from an autosomal gene) producing the characteristic "calico" phenoytpe. A calico cat has a litter of 8 kittens: 1 orange male, 2 black males, 2 orange females and 3 calico females. Assuming there is a single father for the litter, what is the color and genotype of the father?
color and genotype of the father?
orange; XbY
orange; XBY
orange; XBXb
calico; XBXbY
orange; XBXBY
black; XBY
black; XbY
black; XBXb
orange; XbY
orange; XBY
orange; XBXb
calico; XBXbY
orange; XBXBY
black; XBY
black; XbY
black; XBXb
Explanation / Answer
Genotype of the mother is: XBXb
The only genotype that gives all the above given kittens is calico male: XBXbY