Question

ZZ/ZW type of set determination is seen in

• A. Platypus
• B. Snails
• C. Cockroach
• D. Peacock

Answer 1

Answer:

D. Peacock

• The sex chromosomes in birds are designated Z and W, and the male is the homomorphic sex (ZZ) and the female heteromorphic (ZW).

• In most avian species the Z chromosome is a large chromosome, usually the fourth or fifth largest, and it contains almost all the known sex-linked genes.