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kari74 [83]
3 years ago
11

In cats, black fur color is caused by an X-linked allele; the other allele at this locus causes orange color. The heterozygote i

s tortoiseshell. What kinds of offspring would you expect from the cross of a black female and an orange male?
A) tortoiseshell female; black male
B) black female; orange male
C) tortoiseshell female; tortoiseshell male
Biology
1 answer:
allochka39001 [22]3 years ago
5 0

Answer:

A) tortoiseshell female; black male

Explanation:

Females have two X chromosomes and males have an X and a Y chromosome.

<u>The possible genotypes and phenotypes are</u>:

  • XᵒXᵒ: black female
  • XᵒY: black male
  • XᴼXᴼ: orange female
  • XᴼY: orange male
  • XᵒXᴼ: tortoiseshell female

<u>Cross of a black female and an orange male</u>

<h3>XᵒXᵒ  x  XᴼY</h3>

The female only produces Xᵒ gametes. The male produces Xᴼ and Y.

The possible offspring therefore is:  XᵒXᴼ (tortoiseshell females) and XᵒY (black males). The answer is A.

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