2) In cats, one gene for coat color is X-Linked. Male cats are either all black

Question

2) In cats, one gene for coat color is X-Linked. Male cats are either all black or all orange, depending on which allele they have. Females are either all black, all orange or tortoise-shell (Patches of black and orange), with the tortoise shell coat color resulting from random X-chromosome inactivation of the heterozygous genotype. Two cats are mated and the following ratio of phenotypes are seen in the offspring of the mating: Of the female kittens, i are tortoiseshell, i are black. Of the male kittens, 2 are black and are orange. What are the genotypes and phenotypes of the parent cats that produced the kittens above? (2 points)

Explanation / Answer

suppose B is for black color b is for orange color

XbXB = black color female

XBXb = tortoise color female

XbXb = orange color female

XBY = black color male

XbY = orange color female.

according to the question

half male kitten is black (XBY) and half are orange (XbY) so the female parent is XBXb (tortoise color female)

and half female kitten is black (XBXB) and half are tortoiseshell (XBXb) so the male parent is XBY (black color).

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