In the Figure Above,a New Beneficial Allele,B,arises on a Chromosome

question 11

Multiple Choice

In the figure above,a new beneficial allele,B,arises on a chromosome containing the ordered loci A,B,C,D,and E,depicted in the top panel.After reproduction,those chromosomes possessing the B allele increase in frequency.Over time,recombination breaks up the association of the B allele with the A,C,D,and E alleles.Assuming that the five loci are spaced evenly along the chromosome,the first pair of allele combinations to be broken up will be

• A)B and A.
• B)B and C.
• C)B and D.
• D)B and E.
• E)All alleles will break up at an equal rate

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