Question 1

Assertion (A): Meiosis leads to the formation of gametes with half the number of chromosomes.

Reason (R): This is necessary to maintain the chromosome number in sexually reproducing organisms.

Accepted Answer

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

Answer

d) A is false, but R is true.

Answer

c) A is true, but R is false.

Answer

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

Question 2

Assertion(A): Identical twins are genetically identical.

Reason (R): They are formed from the fertilization of two different eggs by two different sperms.

Accepted Answer

c) A is true, but R is false.

Answer

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

Answer

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

Answer

d) A is false, but R is true.

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