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Genetic Problem Solving: Understanding Punnett Squares

Learn how to solve genetics problems step by step. Understand gametes, zygotes, dominant, recessive, and hybrid genes. Explore genotype and phenotype concepts explained with examples.

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Genetic Problem Solving: Understanding Punnett Squares

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Presentation Transcript

  1. Genetics Problem Solving

  2. How do you solve a genetics problem? • Draw the steps in the correct order.

  3. What do the letters outside the Punnett Square stand for? • These are the gametes.

  4. What do the letters inside each square stand for? • These are possible zygotes.

  5. What are pure dominantgenes? • These are homozygous dominant genes • Two of the same genes

  6. What are purerecessive genes? • These are homozygous recessive genes • Two of the same genes

  7. What are hybrid genes? • These are heterozygous genes • Two different genes

  8. What is genotype? • The combination of genes • DD, Dd, dd

  9. What is phenotype? • The traits that are observed • Short hair guinea pig, long hair guinea pig • Hornless cattle, horned cattle

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