A common trait found in orange tabby cats is the following: being awesome (A) is dominant to being average (a).

Question

A common trait found in orange tabby cats is the following: being awesome (A) is dominant to being average (a).

A male cat that is homozygous dominant for the A trait is mated with a female cat that is homozygous recessive.

For a cross with four offspring, what is the probability that they will have an offspring who is heterozygous?

4 out of 4

Answer 1

The male cat is homozygous dominant (AA) and the female cat is homozygous recessive (aa). When these two cats are crossed, all of their offspring will be heterozygous (Aa) for the trait. Therefore, the probability that the offspring will be heterozygous is 4 out of 4, or 100%.