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Pedigrees!!!

Learn about pedigrees, charts that depict the genetic history of a family over generations. Understand the symbols, make a pedigree, and explore examples of diseases like sickle-cell anemia. Discover the importance of blood types and their role in determining parentage.

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Pedigrees!!!

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  1. Pedigrees!!! A Family Tree for Your Genes!

  2. A pedigree is a chart of the genetic history of family over several generations. What is a Pedigree?

  3. Male Female Male and female Symbols for a Pedigree

  4. Married Couple Children How to make the pedigree Examples of connected symbols:

  5. What does a pedigree chart look like?

  6. What do the Symbols of an affected person in a Pedigree Chart look like?

  7. What is an example of a disease used with pedigrees??? • Sickle-cell anemia: a disease where you blood cells have a sickle shape instead of a normal round shape. • Why do you think this would cause a problem?

  8. This is a sickle-cell next to a normal blood cell.

  9. Pedigree with sickle-cell disease

  10. Speaking of blood… Let’s talk about blood types!

  11. What are the different blood types? Phenotype Genotype(s) Type A AA, AO Type B BB, BO AB Type AB Type O OO

  12. Case Study! • Yikes! Mr. Cash died and left all of his money to his two kids. A young man showed up, claiming to be his long lost son, Jake. The judge ordered blood tests for all involved. The blood type of Mr. Cash was on record as AB. His wife had type A. Jake was found out to have type O, so the judge dismissed the case.

  13. Your Job! • Use punnett squares to determine all the possible genotypes that Mr. and Mrs. Cash could have produced in their offspring. • Now give a reason why you agree or disagree with the judges orders based on what you discovered in your punnett square.

  14. Simple blood tests can be used to disprove paternity cases Consider the following paternity cases- All of them claim to be innocent! MOM AB B A O BABY A A B O ACCUSED O O O AB POSSIBLE???

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