Question

Genes A and B are linked. When no crossing over occurs in an individual with genotype Aa Bb, what proportion of the gametes will be recombinant?

A)1
B)½
C)¼
D)0

Answer 1

The proportion of gametes that will be recombinant is 0 when no crossing over occurs in an individual with genotype Aa Bb.

Step-by-step explanation:

When no crossing over occurs in an individual with genotype Aa Bb, the proportion of the gametes that will be recombinant is 0. Recombinant gametes are the result of crossing over or recombination between homologous chromosomes during meiosis. Since no crossing over occurs in this situation, there will be no recombinant gametes.