Inheritance and genetic crosses

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Question 17

Sex determination in grasshoppers follows the $X X / X 0$ system.

Females are homozygous $X X$ , while males are hemizygous $X 0$ (meaning they possess only one X chromosome and no partner sex chromosome, so half of their gametes contain an $X$ chromosome and the other half contain no sex chromosome, represented as $0$ ).

Complete the Punnett square to show how sex is determined in grasshoppers.

	X	0
X
X

[2]

Inheritance and genetic crosses Questions

GCSE
Biology
Inheritance and genetic crosses

GCSE
Biology Edexcel
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