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Colt1911 [192]
3 years ago
11

Coat color in cats is a codominant trait and is also located on the X chromosome. Cats can be black, orange or calico. A calico

cat has black and orange splotches. In order to be calico. the cat must have an allele for the black color and an allele for the orange color. Use a punnett square to show why there are no male calico cats.
Biology
1 answer:
adell [148]3 years ago
7 0

Answer:

The males can only either be black or orange

Explanation:

There can be no male calico because for an offspring to be a calico the two codominant alleles must each be carried on the two X chromosomes and in the males, there is the presence of just one X chromosomes, thus they can either be black or be orange. For the females, the can only be black if they carry the black allele on both X chromosomes, the same goes for the orange.

Parents                          XB            Y

    XB                          XBXB        <u>XBY</u>

    XC                          XCXB       <u> XCY </u>      

XBY- black male

XCY- orange male          

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