Question

Cystic fibrosis is a genetic disorder in homozygous recessive (ff) humans that typically significantly reduces life expectancy. Over time, we would expect the f allele frequency to ________ for this trait.

Answer 1

decrease

Step-by-step explanation:

The frequency of homozygous recessive allele will decrease with time. It is so because the this recessive allele reduces life expectancy, thus a person having this allele in his/her genes would die soon and hence the reproductive rate and success will also decrease. Until unless this allele is passed on to the next generation through mating, it will not occur and hence with time this allele's frequency will decrease.