A Rancher Genotypes All of Her 150 Head of Cattle

question 11

Multiple Choice

A rancher genotypes all of her 150 head of cattle. In her herd, 25 are A₁A₁, 75 are A₁A₂, and 50 are A₂A₂. Assuming there is random mating, no selection, no mutation, and no new cattle are introduced into the population, what is the probability that the A₁ allele will be fixed?

• A) 0
• B) 0.4167
• C) 0.6588
• D) 1

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