Question

A cat homozygous dominant for pointed ears and heterozygous for a short tail reproduces with a cat who has round ears and is homozygous dominant for a short tail. What is the genotype ratio of their possible offspring?

A) 1:2:1
B) 1:1:2
C) 3:1
D) 2:1:1

Answer 1

The genotype ratio of the possible offspring is 1:2:1.

Step-by-step explanation:

To determine the genotype ratio of the possible offspring, we can use a Punnett square. The cat that is homozygous dominant for pointed ears can be represented as PP, and the cat that is heterozygous for a short tail can be represented as Tt. The Punnett square for this cross would look like:

PPPpTtPPTtPpTt

From the Punnett square, we can see that there is one genotype PP, two genotypes Pp, and one genotype Tt. Therefore, the genotype ratio of their possible offspring is 1:2:1. The correct answer is A) 1:2:1.