Explain female heterogamety with the help of an example
Asked by admin @ in Biology viewed by 340 People
Explain female heterogamety with the help of an example
Asked by admin @ in Biology viewed by 340 People
Explain female heterogamety with the help of an example
Answered by admin @
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.
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