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In the given figure, the strength of lin...


In the given figure, the strength of linkage will be higher in:

A

Cross A

B

Cross B

C

Both A and B

D

Neither A nor B

Text Solution

Verified by Experts

The correct Answer is:
A
In Cross A, the strength of linkage between the genes is higher than that of cross B because:
(1) The strength of linkage is determined by the distance between the linked genes in the chromosome. Closely located genes demonstrate a stronger linkage. Hence, in cross A the two genes are located closely on the same chromosome. Whereas in case of cross the genes are located far apart on the same chromosome.
(2) Also, the closely located genes have less crossing over frequency. Thus, they have the greater chance of being inherited together. In contrast, genes located farther away from one another on the same chromosome were more likely to be separated during recombination.
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