NEET Previous Year Question

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : Mendel's law of Independent assortment does not hold good for the genes that are located closely on the same chromosome.
Reason (R) : Closely located genes assort independently.
In the light of the above statements, choose the correct answer from the options given below:

Topic: NEET PYQ

Answer: B. Full step-by-step solution below.

  1. ABoth (A) and (R) are correct but (R) is not the correct explanation of (A)
  2. B(A) is correct but (R) is not correct
  3. C(A) is not correct but (R) is correct
  4. DBoth (A) and (R) are correct and (R) is the correct explanation of (A)

Correct answer: B

Solution

(b) Assertion (A) → Correct. Genes located closely on the same chromosome are linked, so they do not assort independently.
Reason (R) → Incorrect. Closely located genes do not assort independently; they tend to be inherited together due to linkage.

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