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?
____ out of ____
To solve this problem, we need to use the principles of Mendelian genetics. When a homozygous dominant male cat (AA) is crossed with a homozygous recessive female cat (aa), all of their offspring will be heterozygous for the trait (Aa). This is because the dominant trait (A) will always express itself in the presence of the recessive trait (a).
Therefore, the probability that the offspring will be heterozygous (Aa) is 100%. Out of the four possible offspring, all four will have the genotype Aa.
So, the probability is 4 out of 4, or 4/4 (or 1).