Chapters 15

Last update by mayurcooled on 04/23/2014
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Calico cats are female because _______________

Answer:
Calico cats are almost always female because the X chromosome determines the color of the cat and a female cat has two X chromosomes. A common male cat has one X and one Y chromosome. Since the Y chromosome does not have any color genes, there is no chance he could have both orange and non-orange together.

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