The following graphs show the frequency of the b+ allele over 20 generations in two populations of heterozygous flour beetles (data for a population of 10 individuals is shown in graph A; data for a population of 100 individuals is shown in graph B). Why does the frequency of the b+ allele increase in both populations?
A) b+ is a lethal allele.
B) b+ is a balanced polymorphism.
C) b+ is a fixed allele.
D) b+ allele is adaptive.
E) b+ is a neutral mutation.

Question

The following graphs show the frequency of the b+ allele over 20 generations in two populations of heterozygous flour beetles (data for a population of 10 individuals is shown in graph A; data for a population of 100 individuals is shown in graph B). Why does the frequency of the b+ allele increase in both populations? 
A) b+ is a lethal allele. 
B) b+ is a balanced polymorphism. 
C) b+ is a fixed allele. 
D) b+ allele is adaptive. 
E) b+ is a neutral mutation.

Quizplus · Accepted Answer

The Answer of The following graphs show the frequency of the b+ allele over 20 generations in two populations of heterozygous flour beetles (data for a population of 10 individuals is shown in graph A; data for a population of 100 individuals is shown in graph B). Why does the frequency of the b+ allele increase in both populations? 
A) b+ is a lethal allele. 
B) b+ is a balanced polymorphism. 
C) b+ is a fixed allele. 
D) b+ allele is adaptive. 
E) b+ is a neutral mutation.

The Following Graphs Show the Frequency of the B+ Allele