Question

An individual of the genotype “Aa” mates with an individual of the genotype “Aa”. What is the probability that their first two offspring will both be the “aa” genotype? (Type answer as a probability between 0 and 1)

Answer 1

Answer:

1/4

Explanation:

if you look at the attached image, i made a punnett square to represent the relationship. Only one of the squares is aa genotype out of 4, therefore the probability that their first two offspring will both be the “aa” genotype is 1/4.

Answer 2

Answer:the probability of their first two offspring being aa is 0.25

Explanation:

Because their are 4 possible genotypes for the offsprings

AA Aa Aa aa

And the probability of aa is 1/4