Question

Assertion (A): In grasshoppers, females are heterogametic and males are homogametic.

Reason (R): In grasshoppers, male has only one sex chromosome (XO) whereas the female has sex chromosomes (XX).

Options

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

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

• A is true but R is false.

• A is false but R is true.

Answer 1

A is false but R is true.

Explanation:

The assertion is false because grasshoppers exhibit male heterogamety, meaning males produce two different types of gametes (half with an X chromosome and half without one) while females are homogametic. The reason is true because grasshoppers use an XO sex-determination system, where females possess a matching pair of sex chromosomes (XX) and males possess only a single X chromosome (XO).