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Biology · Unit 4 · Genetics and heredity · Genetics and heredity

Infer patterns of inheritance and predict frequencies of genotypes and phenotypes from genetic data, including - histograms (polygenic inheritance) - pedigrees (dominant/recessive, autosomal/sex-linked) - Punnett squares (dominant/recessive, autosomal/sex-linked and multiple-allele inheritance).

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Question 1

A Punnett square for a cross between two heterozygous parents for a gene with two alleles (A and a) is shown below. Which genotypic ratio is represented by the offspring?

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