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Unlocking the Mystery of Family Traits: Your Guide to Genetic Pedigrees

Congratulations, aspiring detective! Your mission is to uncover the genetic traits within your family. Using a genetic pedigree, you will map out the genetic history spanning several generations. A pedigree chart is created by scientists or genetic counselors who analyze familial relationships, helping you connect the dots between married couples, offspring, and twins. Throughout this guide, you'll learn how to construct a pedigree, interpret vital genetic information, and analyze dominant and recessive traits, including examples to aid your understanding.

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Unlocking the Mystery of Family Traits: Your Guide to Genetic Pedigrees

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Presentation Transcript

  1. Congratulations! • You have just become a detective. Your goal is to figure out why certain family members have specific traits! • How are you going to accomplish your goal?

  2. Genetic Pedigree

  3. What is a pedigree? • Chart of the genetic history of family over several generations • Scientist or genetic counselor finds information and makes the chart to analyze it

  4. Constructing a Pedigree • Female • Male

  5. Connecting People • Married couple • Offspring

  6. Connecting People • Fraternal Twins • Identical twins

  7. What does a pedigree chart look like?

  8. How do they work • Video • We can’t always determine if something is heterozygous. As we go through our examples and worksheet you are worried about completely filling in the recessive traits.

  9. Let’s look at an example! • Muscle type is not a sex linked characteristic. Fast twitch muscles dominate over slow twitch muscles

  10. Place the Genotype of each individual below its symbol Ff F? ff Ff ff Ff F? Ff Ff Ff Ff ff F? ff

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