Proven Activities for Teaching Genetics

1. Proven Activities for Teaching Genetics Rachel Martin Science Department Head

2. Getting started… • When you fall and scrape the skin off your hands and knees, how does your body make new skin cells to replace the skin cells that were scraped off? • How does your body make sure each new cell has all the chromosomes it needs to have? • How does a baby get his or her genes?

3. Meiosis or Mitosis? • Use the provided table to sort your statements into three categories. • Meiosis • Mitosis • Both

4. Meiosis vs. Mitosis

6. Ways to remember… • MITosis takes the cell and Makes It Two • Meiosis has to do with sex • From the cell’s point of view: • mITosis results in Identical Twins • mEoSis results in Egg and Sperm

7. Why does the cell organize? • Place your DNA in the nucleus of your cell. • You have 2 sets of homologous chromosomes with the alleles marked for hemoglobin, ability to smell, and height. • Challenge: Separate out these 2 sets of chromosomes while keeping them inside the nucleus.

8. Why does the cell organize? • How could you tell which chromosomes were homologous? • Did you have any problems while you were trying to sort out the chromosomes inside the nucleus on your paper? • How could you make it easier?

9. Wrap each piece of thread around a piece of straw and place inside the nucleus. • Separate them into 2 pairs of homologous chromosomes while keeping them inside the nucleus. • What process is this simulating in a cell?

10. What proteins are coded?

11. Genetics of Sesame Street Characters

12. What if Zoe and Elmo fell in love, and had a baby? What would the baby look like?

13. Homer Honker Henrietta Honker

14. What traits could be passed on?

15. Genetics of Sesamus muppetis

16. Grover

17. Henrietta Honker

18. What if… X = ? What would their kids look like?

19. Gene Map

20. Chromosome 1 E e Eye Shape

21. E Meiosis: eye color nucleus e e E Step 1: DNA replication

22. e E e E Step 2: Homologous chromosomes line up in center of cell Nuclear membrane dissolves

23. e E e E Step 3: Spindle fibers separate homologous chromosomes to opposite sides of the cell.

24. e E e E Step 4: Chromatids line up in the center of cell.

25. E E e e Step 5: Spindle fibers separate chromatids.

26. e e E E Step 6: Nuclear membranes separate the chromatids to create four egg cells.

27. e E Meiosis complete: Half the number of chromosomes E e

28. Now what eye color traits would Grover contribute? e e e e

29. e e e e e e E E ?

30. Eye Color e e E e

31. E e B B E e O O Chromosome 2 Body Color

32. Eye Color & Body Color EeOO x eeBB EO EO eO eO eB eB eB eB

33. e e B B E e O O Chromosome 3 Xh Y XH Xh

34. B e Xh e O XH Xh O B e e Xh ? Xh O B e E Y XH O B e E Y

35. Punnett Square B B O Body Color O Lips l l L e e Eye Shape l E e

36. Punnett Square y xh Nose Color Hair N N N xh n xH

37. Cross Results

38. EeNn x eeNN The Product Rule ¼ EeNN ½ NN ½ Ee ½ Nn ¼ EeNn ½ NN ¼ eeNN ½ ee ½ Nn ¼ eeNn

39. Illustrate!

40. http://techingmadeeasy.wikispaces.com

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