Understanding Punnet Squares

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Definition of Punnett Square

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to predict genetic crosses

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Homozygous genotype

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Front

Heterozygous genotype

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Dominant allele symbol

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Front

Recessive allele symbol

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Front

Monohybrid cross

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involving one trait

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Steps to fill a Punnett Square

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parent alleles, combine in boxes

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Back

Front

Genotype vs. Phenotype

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Genotype: genetic makeup; Phenotype: physical traits