A Rancher Genotypes All of Her 150 Head of Cattle

question 28

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)0.0127
• C)0.4167
• D)0.6588
• E)1

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