Trait A is dominant to trait a, and trait B is dominant to trait b.If an AaBB mother mates with an AaBb father, what percent of the offspring will have the aaBB genotype?

Question

Quizplus · Accepted Answer

The cross between AaBB (mother) and AaBb (father) can be broken down into two separate Punnett squares: one for the Aa x Aa cross and another for the BB x Bb cross. For the Aa x Aa cross, the chance of producing an aa offspring is 1/4 (25%). For the BB x Bb cross, the chance of producing a BB offspring is 1/2 (50%). Multiplying these probabilities gives 1/4 * 1/2 = 1/8, which is 12.5%.

Trait a Is Dominant to Trait A, and Trait B