Inheritance and genetic crosses

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Question 22

In birds, biological sex is determined by the $Z\,$ and $W\,$ sex chromosomes. Female birds are heterogametic ( $Z W$ ) and male birds are homogametic ( $Z Z$ ).

Complete the Punnett square by identifying the missing gametes A and B to show how sex is inherited in birds.

	Female gametes
	$Z$	A
Male gametes
$Z$	$Z Z$	$Z W$
B	$Z Z$	$Z W$

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Inheritance and genetic crosses Questions

GCSE
Biology
Inheritance and genetic crosses

GCSE
Biology Edexcel
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