In a cross between two heterozygotes, what is the probability that there will be two simultaneous...
In a cross between two heterozygotes, what is the probability that there will be two simultaneous offspring and one is homozygous recessive and the other homozygous dominant?
(hint: two events occuring at the same time)
Homework Answers
Genotype of heterozygotes = Aa
Aa × Aa
| Gametes | A | a |
| A | AA homozygous dominant | Aa heterozygous |
| a | Aa heterozygous | aa homozygous recessive |
Probability of events occurring at same time = product rule
Probability of homozygous recessive = 1/4
Probability of homozygous dominant = 1/4
Probability of both of them occuring together = (1/4) × (1/4) = 1/16
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