Question

Match the following sex-determination systems with examples

Type	Examples
A. XX-XO	i. Birds, Reptiles
B. XX-XY	ii. Moths, Few butterflies
C. ZO-ZZ	iii. Grasshoppers, Cockroaches
D. ZW-ZZ	iv. Drosophila

• A. A – iii, B – ii, C – iv, D – i
• B. A – iii, B – iv, C – ii, D – i
• C. A – iii, B – iv, C – i, D – ii
• D. A – iii, B – i, C – ii, D – iv

Hint:

XY = male heterogamety; ZW = female heterogamety.

Answer 1

The Correct Option is B

- XX-XO → Grasshoppers, Cockroaches
- XX-XY → Drosophila and humans
- ZO-ZZ → Moths, Few butterflies
- ZW-ZZ → Birds, Reptiles