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In this video, practise using punnet squares in different scenarios. First, learn how sex is determined in humans and the likelihood of a couple have a boy or girl using punnet squares. Then, we look at inherited disorders - namely Polydactyly as a dominant disorder and Cystic Fibrosis as a recessive disorder. We look at how to interpret family trees for these disorders before understanding the concept of genetic screening for these and other inherited disorders.
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Length: 34:09
Subject: biology
Topic: inheritance, variation and evolution
Exam Board: aqa,ocr,edexcel
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Price: £4.00
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