Sex- Linked problem 2?

In cats, black colour is due to the gene C^b, and yellow colour, its allele C^y. Yellow and black are co-dominant producing a spotted pattern known as calico. These genes are sex- linked. What kinds of offspring would you expect form a cross between a black male and calico female?

Sex- Linked problem 2?
Depends upon what the other allele is in the black cat...is it C^b and C^b or C^b and C^w(hite) or C^br(own) or C^g(rey) or C^t(an)?
Reply:You can have either 25% of black males cats


25% of yellow male cats


25% homozygous black female cats


25% calico female cats.


But all calicos will be female since the gene for color is on the X chromosome and females have 2 (XX genotype) so the black and yellow color will be expressed but for males it can only be either black or yellow (XY).


If there is a calico male he will most certainly be sterile (presence of an extra X chromosome, XXY which displays the calico characteristics)
Reply:You have a 50-50 chance to get a calico or a completely black homozygous.