Cystic fibrosis is a recessive genetic disease. One per 2,500 births among North

ID: 3386172 • Letter: C

Question

Cystic fibrosis is a recessive genetic disease. One per 2,500 births among Northern Europeans is affected by the disease. If mating is random, then what is the frequency of heterozygotes in the population?

The frequency cannot be calculated because selection violates Hardy-Weinberg assumptions

1/25, or about 4%

1/50, or about 2%

1/2,500, or about 0.04%

The frequency cannot be calculated because selection violates Hardy-Weinberg assumptions

1/25, or about 4%

1/50, or about 2%

1/2,500, or about 0.04%

Explanation / Answer

Cystic fibrosis is a recessive genetic disease. One per 2,500 births among North

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Cystic fibrosis (CF) is caused by a genetic mutation resulting in defective prot

Cystic fibrosis is a recessive human disease. Consider a man and a woman who are

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Cystic fibrosis is a recessive genetic disease. One per 2,500 births among North

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