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Question
In which systems of sex determination is the male the heterogametic sex?
Options
XO and XY systems
WZ system only
XX and XY systems
XO and WZ systems
MCQ
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Solution
The heterogametic sex produces two types of gametes. In XO and XY systems, the male is heterogametic. In the WZ system, the female is the heterogametic sex. This means males produce two different types of gametes in XO and XY systems.
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