Question

Assertion (A): A person has a cleft chin and his newborn son also has a cleft chin.

Reason (R): The characteristic of cleft chin has been caused by the changes in reproductive cells of the person.

Options

• Both A and R are true and R is correct explanation of the assertion.

• Both A and R are true but R is not the correct explanation of the assertion.

• A is true but R is false.

• A is false but R is true.

Answer 1

Both A and R are true and R is correct explanation of the assertion.

Explanation:

The father has a cleft chin, which is an inherited trait, and he passes this trait to his newborn son through his genes. Therefore, Assertion (A) is true.

Inherited characteristics are determined by genes present in the DNA. These genes are carried by the reproductive cells (gametes) and are transmitted from parents to their offspring during reproduction. Therefore, Reason (R) is true and correctly explains the assertion.

Hence, both A and R are true and R is the correct explanation of the assertion.