From a Standpoint of Natural Selection,we See That the Heterozygous

question 4

Multiple Choice

From a standpoint of natural selection,we see that the heterozygous advantage for βᴬβˢ individuals is balanced by the disadvantage to those with SCD or the wild-type alleles (and no malaria protection) .The action of these conflicting trends produces an overall increase in the mutant allele until it reaches a state where the gain and loss of βˢ alleles is equal.What is the term for this stable condition that allows mutant alleles to remain in a particular population?

• A)equilibrium frequency
• B)heterozygote fitness
• C)restriction fragment length polymorphism
• D)single nucleotide polymorphism
• E)balanced polymorphism

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