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Punnett Squares

This guide provides a clear explanation of Punnett Squares and their role in predicting genetic traits. It covers examples of phenotypes, such as tall and short plants, as well as genotypes, including heterozygous and homozygous representations. Using traits like curly and straight hair, we analyze percentages of genotypes (e.g., 25% homozygous dominant, 50% heterozygous, and 25% homozygous recessive) and phenotypes (e.g., 75% curly hair and 25% straight hair) for better understanding. Ideal for students and educators in genetics!

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Punnett Squares

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  1. Punnett Squares

  2. T=Tall t=short • Example of Phenotype? • Example of Genotype?

  3. T=Tall t=short • Example of Phenotype: Tall • Example of Genotype: Tt (Heterozygous)

  4. T = Tall t= short • Genotype: 50% Heterozygous 50% Homozygous Recessive • Phenotype: 50% Tall (Tt) 50% Short (tt)

  5. H = Curly Hair h= Straight hair • What is the genotype? • What is the phenotype?

  6. H=Curly Hair h=Straight hair • Genotype: 25% Homozygous Dominant, 50% Heterozygous, 25% Homozygous Recessive • Phenotype: 75% Curly hair, 25% Straight Hair

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