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svetlana [45]
3 years ago
12

In cats, coat color is an X-linked trait with incomplete dominance. Yellow coat is caused by the allele XT and black coat by the

allele Xt. A tortoise cost is caused by the heterozygous condition. What is the correct way to represent the genotype of a male cat with a black coat
Biology
1 answer:
Goryan [66]3 years ago
4 0

Answer:

The genotype of a black male is XtY

Explanation:

<u>Available data:</u>

  • coat color is an X-linked trait with incomplete dominance.
  • Yellow coat is caused by the allele XT
  • Black coat by the allele Xt.
  • Tortoise coat is caused by the heterozygous condition

So,

<u>females genotypes           females phenotype </u>

  •   XTXT                →        Yellow coat
  •   XtXt                  →         Black coat
  •   XTXt                 →         Tortoise coat

<u>males genotype                    males phenotype</u>

  •   XTY                   →         Yellow coat
  •   XtY                    →         Black coat

Males only carry one X chromosome, so they can only be either black - XtY- or yellow -XTY-.

Females are the only ones that can express the tortoise coat.

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