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Genetics and heredity — Question 4

QCAA 2021, Paper 1 · 1 mark

Q4 · 2021 · Paper 1Unclassified1 mark

QUESTION 4

To demonstrate polygenic inheritance of colour in wheat, a cross was performed between two intermediate parents (AaBbCc × AaBbCc). Each dominant allele adds a ‘unit’ of colour to the phenotype. Which graph would depict the number of individuals and number of phenotypes for the cross?

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