Explain female heterogamety with the help of an example

Asked by admin @ 23/08/2021 in Biology viewed by 332 People

Answered by admin @ 23/08/2021

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.

Explain female heterogamety with the help of an example

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