Which of the Following Organisms Has a ZZ-ZW Method of Sex

Question

Which of the following organisms has a ZZ-ZW method of sex determination?
A)House mice
B)Monarch butterflies
C)Fruit flies
D)Humans
E)Worms

Accepted Answer

Monarch butterflies have a ZZ-ZW method of sex determination, where males have two identical copies of the sex chromosomes (ZZ) and females have two different sex chromosomes (ZW).