The inheritance of biological sex in humans
Lesson 6 / 6
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I can explain how the inheritance of chromosomes determines biological sex in humans.
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During sexual reproduction, an individual’s biological sex is determined by the chromosomes they inherit.
In humans, the 23rd pair of chromosomes are sex chromosomes; XX in females and XY in males.
A gene on the Y chromosome triggers the development of testes, which make male sex hormones (androgens).
Interpreting, completing and constructing Punnett squares showing the inheritance of human sex chromosomes.
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