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In grasshopper, the sex-determination mechanism is:

AZW type
BXO type (males XO, females XX)
CHaplodiploid
DXY type
Answer & Solution
Correct answer: B. XO type (males XO, females XX)
**Grasshopper:** **XO type** — females have a pair of X chromosomes (XX + autosomes), males have only one X (XO + autosomes). Males produce two types of sperm (X-bearing and no-X-bearing) → male heterogamety.
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