The Graphs Below Show the Frequency of the B+ Allele

question 99

Multiple Choice

The graphs below show the frequency of the b+ allele over twenty generations in two populations of heterozygous flour beetles (data for a population of ten individuals is shown in graph A; data for a population of one hundred 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)the b+ allele is adaptive
• E)b+ is a neutral mutation

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