Cystic Fibrosis Is a Genetic Disorder in Homozygous Recessives That

question 22

Multiple Choice

Cystic fibrosis is a genetic disorder in homozygous recessives that causes death during the teenage years.If 9 in 10,000 newborn babies have the disease,what are the expected frequencies of the dominant (A₁) and recessive (A₂) alleles according to the Hardy-Weinberg model?

• A)f(A₁)= 0.9997,f(A₂)= 0.0003
• B)f(A₁)= 0.9800,f(A₂)= 0.0200
• C)f(A₁)= 0.9700,f(A₂)= 0.0300
• D)f(A₁)= 0.9604,f(A₂)= 0.0392
• E)f(A₁)= 0.9600,f(A₂)= 0.0400

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