The figure below demonstrates that
A)frequency dependent selection results in a stable polymorphism.
B)the frequency of the A₁ allele (p) will always go to fixation.
C)the frequency of the A₁ allele (p) will always go to zero.
D)the frequency of the A₁ allele (p) may go to one or zero depending on the initial value of p.
E)frequency selection leads to the random loss of alleles.

Question

The figure below demonstrates that 
A)frequency dependent selection results in a stable polymorphism. 
B)the frequency of the A₁ allele (p) will always go to fixation. 
C)the frequency of the A₁ allele (p) will always go to zero. 
D)the frequency of the A₁ allele (p) may go to one or zero depending on the initial value of p. 
E)frequency selection leads to the random loss of alleles.

Quizplus · Accepted Answer

The graph shows that the frequency of allele A1 can either increase or decrease and may eventually go to either fixation or loss, depending on the initial frequency of A1. Therefore, the best choice is D as it states that the frequency of the A1 allele may go to one or zero depending on the initial value of p. The other options are not supported by the graph and are therefore incorrect. The graph shows that frequency-dependent selection may result in a stable polymorphism where both alleles coexist at a certain frequency range.

The Figure Below Demonstrates That