The gene of the black color in the cat is linked to the sex; another allele of this gene corresponds
| September 8, 2021 | education
The gene of the black color in the cat is linked to the sex; another allele of this gene corresponds to the red color; heterozygous animals have a spotted tortoiseshell color. What will be the offspring from crossing a black cat with a black cat?
Let XA be the black color of the coat, Xa the red color of the coat.
XАXa – tortoiseshell coloration, can only be in cats.
Crossing scheme:
Parents: XАXА х ХАY,
Gametes: XA x XA, Y,
Offspring: XАХА, XАY.
There are no heterozygotes for this trait, so all kittens will have a black coat.
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