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Explain the mechanism of sex determinati...

Explain the mechanism of sex determination in insects like Drosophila and grasshopper.

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Drosophila is an example of XY type of sex determination. where males are heterogametic (XY) and females homogametic (XX).
Grasshopper is an example of XO type of sex determination where the males have only one X - chromosome while the females have two XX chromosome.
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