In cats an X-linked pair of alleles, B and b , controls color of fur. The alleles are incompletely dominant: B produces black, b produces yellow, and Bb produces tortoise-shell.
(a) A yellow cat had a litter of two tortoiseshell kittens and one yellow. What is the sex of the yellow kitten?
(b) A tortoiseshell cat brings home a litter of black, yellow, and tortoiseshell kittens. The color of which sex would tell you the color of the tomcat that produced them?
(c) A yellow male is crossed with a tortoiseshell female. If the female has all male kittens in her litter of four, what color(s) would they be?
(d) A tortoiseshell cat brings home her litter of black, yellow, and tortoiseshell kittens. By what method could you possibly decide whether the male parent was the black tomcat next door?

Question

In cats an X-linked pair of alleles, B and b , controls color of fur. The alleles are incompletely dominant: B produces black, b produces yellow, and Bb produces tortoise-shell. 
 (a) A yellow cat had a litter of two tortoiseshell kittens and one yellow. What is the sex of the yellow kitten? 
 (b) A tortoiseshell cat brings home a litter of black, yellow, and tortoiseshell kittens. The color of which sex would tell you the color of the tomcat that produced them? 
 (c) A yellow male is crossed with a tortoiseshell female. If the female has all male kittens in her litter of four, what color(s) would they be? 
 (d) A tortoiseshell cat brings home her litter of black, yellow, and tortoiseshell kittens. By what method could you possibly decide whether the male parent was the black tomcat next door?

Quizplus · Accepted Answer

The Answer of In cats an X-linked pair of alleles, B and b , controls color of fur. The alleles are incompletely dominant: B produces black, b produces yellow, and Bb produces tortoise-shell. 
 (a) A yellow cat had a litter of two tortoiseshell kittens and one yellow. What is the sex of the yellow kitten? 
 (b) A tortoiseshell cat brings home a litter of black, yellow, and tortoiseshell kittens. The color of which sex would tell you the color of the tomcat that produced them? 
 (c) A yellow male is crossed with a tortoiseshell female. If the female has all male kittens in her litter of four, what color(s) would they be? 
 (d) A tortoiseshell cat brings home her litter of black, yellow, and tortoiseshell kittens. By what method could you possibly decide whether the male parent was the black tomcat next door?

In Cats an X-Linked Pair of Alleles, B and B