Question

Given below are two statements :
one is labelled as
Assertion (A) and the other is labelled as
Reason (R).
Assertion (A) :
The closer two loci reside along the axis of the chromosome, the more likely they are to be inherited together.
Reason (R) :
The farther apart two linked loci, the more likely a random crossover event will occur in between them.
In the light of the above statements, choose the most appropriate answer from the options given below :

• A. Both (A) and (R) are correct and (R) is the correct explanation of (A)
• B. Both (A) and (R) are correct but (R) is not the correct explanation of (A)
• C. (A) is correct but (R) is not correct
• D. (A) is not correct but (R) is correct

Hint:

Remember: \[ \text{Recombination frequency} \propto \text{Distance between genes} \]
• Closely linked genes \(\rightarrow\) inherited together
• Widely separated genes \(\rightarrow\) more recombination \[ 1\% \text{ recombination} = 1 \text{ map unit (centimorgan)} \]

Answer 1

The Correct Option is A