Question 1

Assertion (A): Genetic variation is essential for evolution and adaptation.

Reason (R): Crossing over is one of the mechanisms that introduces variation in gametes.

Accepted Answer

a) Both A and R are true, and R is the correct explanation of A.

Answer

c) A is true, but R is false.

Answer

d) A is false, but R is true.

Answer

b) Both A and R are true, but R is not the correct explanation of A.

Question 2

Assertion(A): Crossing over leads to the formation of genetically identical gametes.

Reason (R): Crossing over increases genetic variability among offspring.

Accepted Answer

d) A is false, but R is true.

Answer

b) Both A and R are true, but R is not the correct explanation of A.

Answer

c) A is true, but R is false.

Answer

a) Both A and R are true, and R is the correct explanation of A.

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