Question

Explain female heterogamety with the help of an example

Answer 1

In most of species like birds, moths and some fish a chromosomal mechanism of sex determination occurs that is basically identical to the XX-XY mechanism. As females are heterogametic it is designated as ZW. The males being homogametic, they are designated as ZZ. This is referred as ZZ-ZW type instead of XX-XY system.It is common in insects, vertebrates like fish reptiles, birds, etc. Females are heterogametic with ZW and males are homogametic with ZZ. Female produces two types of eggs, i.e., 50% with ‘Z’ or 50% with ‘W’ while male produces only one type of sperms, i.e., with ‘Z’. The sex of the offspring depends on the type of egg it was fertilized.

Answer 2

Female heterogamety

Explanation:

• As females area unit heterogametic it's selected as ZW. The males being homogametic, they're selected as ZZ. this can be named because the ZZ-ZW kind rather than the XX-XY system. it's common in insects, vertebrates like fish reptiles, birds, etc.
• Females area unit heterogametic with ZW and males area unit homogametic with ZZ. feminine produces 2 styles of eggs, i.e., five hundredth with ‘Z’ or five hundredth with ‘W’ whereas male produces only 1 sort of sperms, i.e., with ‘Z’. The sex of the offspring depends on the kind of egg it had been fertilised.