Which of the Following is Most Effective at Fixing the Recessive

Question

Which of the following is most effective at fixing the recessive allele in a population?
A) Selection for a recessive allele
B) Selection against a recessive allele
C) Selection against homozygous recessive individuals
D) Selection against heterozygotes
E) All of these

Accepted Answer

Selection for a recessive allele is most effective at fixing the recessive allele in a population because it directly increases the frequency of that allele by favoring its expression and survival.