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Understanding Heredity

Kate Edgren —Sample Middle School Lesson. Understanding Heredity. Today’s Agenda. Sample Agenda. https://echo.newtechnetwork.org/?q=ntlp/courses/agenda/252385391/2014/3/26. Lesson Background. Lesson in a Genetics project 45-60 minute class 7 th / 8 th grade science 1-1 Computers

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Understanding Heredity

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  1. Kate Edgren—Sample Middle School Lesson Understanding Heredity

  2. Today’s Agenda

  3. Sample Agenda • https://echo.newtechnetwork.org/?q=ntlp/courses/agenda/252385391/2014/3/26

  4. Lesson Background • Lesson in a Genetics project • 45-60 minute class • 7th/ 8th grade science • 1-1 Computers • Information already introduced: • Genotype • Phenotype • Gene vs. allele • Heterozygous vs. Homozygous

  5. Toy Babies! • Predict what your toy couple’s babies would look like. Use the paper provided to draw and/or describe their offspring. • But first—girl or boy?!? Come to Mrs. Edgren to get a coin. Heads = Girl, Tails = Boy

  6. Think, Pair, Share • Think about WHY your baby looks like it does. • Pair with someone next to you. • Share and compare your drawings. • Be ready to share out some observations with the class!

  7. How does heredity work?

  8. How does heredity work?

  9. Dominant vs. Recessive • A dominant allele is one that “shows-up” in an organism when it is present. • Because it is DOMINANT we represent it with a CAPITAL letter. • Examples: A G H Q

  10. Dominant vs. Recessive • A recessive allele is one that “hides” in an organism unless there is no dominant gene present. • Because it is recessive, we represent it with a ___________________ letter. • Examples: • a g h q

  11. Brain Pop Video • Please take 3 notes and list Need to Knows on your worksheet! • http://www.brainpop.com/science/cellularlifeandgenetics/heredity/ • Share out!

  12. Punnett Square Practice • In flowers, purple flowers are dominant to white flowers. Cross a purple flower (PP) with a white flower (pp).

  13. HOMEWORK • OPTIONS • Complete WS • Play this game, print final screen to turn in! • Mini-Workshop at board with Mrs. Edgren (she’ll let you know when you’ve done enough practice!) • DUE TOMORROW 

  14. Exit Ticket • Review today’s goals: • Students will be able to successfully complete a Punnett Square and identify parent and offspring genotypes and phenotypes • Students will be able to express how probability can be used to predict inheritance • On a post-it…. • Draw the smiley face that represents how you’re feeling about these goals. Explain. • Give Mrs. Edgren a grade (A-F) on how well she helped you meet these goals today. Explain.

  15. Lesson Debrief • Fill-in matrix • Make observations • Questions • Additional Resources

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