1.Consider two genes with the alleles A/a and B/b. If the two genes are 30 m.u.

Question

1.Consider two genes with the alleles A/a and B/b. If the two genes are 30 m.u. apart what gametes will an individual with the genotype AB/ab be expected to produce?

A)35% will contain A and B alleles, 35% will contain a and b alleles, 15 % will contain A and b, and 15% will contain a and B

B)25% of each of the following allele combinations: A and B, A and b, a and B and a and b

C)20% will contain A and B alleles, 20% will contain a and b alleles, 30% will contain A and b alleles, and 30% will contain a and B alleles

D)35% will contain A and b, 35% will contain a and B, 15% will contain A and B, and 15% will contain a and b

E)30% will contain A and B, 30% will contain a and b, 20% will contain A and b, and 20% will contain a and B.

Explanation / Answer

D)35% will contain A and b, 35% will contain a and B, 15% will contain A and B, and 15% will contain a and b

The parental genotypes are givn as Aa and Bb. As these two genes are 30 map units apart, 30% of gametes will be recombinant with the genotypes AB, ab (each consisting of 15%). The remaining 70% will be similar to parental genotypes (Ab, aB) each consisting of 35%.

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