In Cats,the Gene for Coat Color Is Found on the X

question 35

Multiple Choice

In cats,the gene for coat color is found on the X chromosome.Shown below is a mass of cells making up an early female cat embryo.The X chromosomes are shown in each cell;this embryo has one orange coat color allele (O) and one black coat color allele (B) .Which of the following is ACCURATE about this embryo?

• A)It will give rise to a calico cat
• B)It will give rise to a black cat,because black is dominant to orange
• C)It will give rise to an orange cat,as the paternal chromosomes carrying the black allele will be inactivated
• D)Since it is heterozygous,it will give rise to a cat with two Barr bodies in each cell
• E)Since it is heterozygous,it will give rise to a calico cat with two Barr bodies in each cell

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