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Which insect group shows XO type of sex determination, where males have one X chromosome and females have two?
AGrasshopper
BHoney bee
CDrosophila
DSilkworm
Answer & Solution
Correct answer: A. Grasshopper
Grasshoppers exemplify XO sex determination. Males are X (one X plus autosomes) and females are XX. Drosophila uses XY; silk moths use ZW.
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