Single Choice

Two genes R and Y are located very close on the chromosomal linkage map of maize plant. When RRYY and rryy genotypes are hybrid, the F$$_2$$ segregation will show

AHigher number of the recombinant types
BSegregation in the expected 9:3:3:1 ratio
CSegregation in 3:1 ratio
DHigher number of the parental types
Correct Answer

Solution

The closely located genes show the tendency of linkage and they are transmitted together to the next generation. If two closely located genes show linkage, they do not show cross over and result in formation of higher number of the parental types. Option D is correct.

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