1. Copyright © 2012 by InteractiveScienceLessons.com What is DNA?

2. Copyright © 2012 by InteractiveScienceLessons.com 1.Get 1 long red and 1 white pipe cleaner 2.Cut the red into four equal sections 3.Cut the white into four equal sections

3. Copyright © 2012 by InteractiveScienceLessons.com 1.Get 1 long red and 1 white pipe cleaner 2.Cut the red into four equal sections 3.Cut the white into four equal sections 4.Make a hook at both ends of the red pieces by bending them around a pencil 5.Do the same for the white pieces

4. Copyright © 2012 by InteractiveScienceLessons.com 6.Hook the ends of a red and white piece together; press down to join them 7.Alternate red/white 2x 8.Make another one just like the first

5. Copyright © 2012 by InteractiveScienceLessons.com 9.Cut the 4 remaining colors in half. Take one short (3”) piece. 10.Now choose one another short piece. It can be the same or different color. You now have 2. 11.Each piece needs a mate: green goes with blue, and yellow with black. (Teachers-hand out new pieces now)

6. Copyright © 2012 by InteractiveScienceLessons.com 9.Cut the 4 remaining colors in half. Take one short (3”) piece. 10.Now choose one another short piece. It can be the same or different color. 11.Each piece needs a mate: green goes with blue, and yellow with black. 12.Hook the pieces together

7. Copyright © 2012 by InteractiveScienceLessons.com 13.Attach them to a section of red; either one can go either way

8. Copyright © 2012 by InteractiveScienceLessons.com 13.Attach them to a section of red; either one can go either way 14. Now hook the ends of your DNA chain to those of the people next to you…

9. Copyright © 2012 by InteractiveScienceLessons.com 13.Attach them to a section of red; either one can go either way 14. Now hook the ends of your DNA chain to those of the people next to you… 15.and then with the rest of class!

10. Copyright © 2012 by InteractiveScienceLessons.com Group 1- You will count the total number of blue/green pairs in the section of DNA we made. It does not matter which way the blue and green are oriented. In this example there are 11 blue/green pairs. Group 2- You will count the total number of yellow/black pairs in our section of DNA. It does not matter which way the yellow and black are oriented. In this example there are 13 yellow/black pairs. In this example there are 7consecutive blue/greens. Group 3- You will only count the number of blue/greens in which the next pair is also blue/green. It does not matter which way the blue and green are oriented. A blue/green with a yellow/black on both sides of it does not count.

11. Copyright © 2012 by InteractiveScienceLessons.com Group 4- You will count the number of blue/greens in which the next pair is also blue/green AND oriented the exact same way. In this example there are 5 consecutive blue/greens oriented the same way In this example there are 10 consecutive yellow/blacks Group 5- You will only count the number of yellow/blacks in which the next pair is also yellow/black. It does not matter which way the yellow and black are oriented. A yellow/black with a blue/green on both sides of it does not count. In this example there are 5 consecutive yellow/blacks oriented the same way. Group 6- You will count the number of yellow/blacks in which the next pair is also yellow/black AND oriented the exact same way.

12. Copyright © 2012 by InteractiveScienceLessons.com If the number is greater than 75, it’s a girl! If the number is less than 76, it’s a boy! 1.Total number of blue/green pairs 2.Total number of yellow/black pairs 3.Number of consecutive blue/green pairs, in either order 4.Number of consecutive blue/green pairs, in exact order 5.Number of consecutive yellow/black pairs, in either order 6.Number of consecutive yellow/black pairs, in exact order

13. Copyright © 2012 by InteractiveScienceLessons.com 1.Total number of blue/green pairs 2.Total number of yellow/black pairs 3.Number of consecutive blue/green pairs, in either order 4.Number of consecutive blue/green pairs, in exact order 5.Number of consecutive yellow/black pairs, in either order 6.Number of consecutive yellow/black pairs, in exact order 45-50 :< 40 yrs. 51-58 :41-50 yrs. 59-64 :51-60 yrs. 65-73 :61-70 yrs. 74-80 :71-77 yrs. 81-88 :78-83 yrs. 89-95 :> 83 yrs.

14. Copyright © 2012 by InteractiveScienceLessons.com 45-50 : < 5’ 0” 51-58 :5’ 0” 59-64 :5’ 2” 65-73 :5’ 5” 74-80 :5’ 10” 81-88 :6’ 2” 89-95 : > 6’ 2” 1.Total number of blue/green pairs 2.Total number of yellow/black pairs 3.Number of consecutive blue/green pairs, in either order 4.Number of consecutive blue/green pairs, in exact order 5.Number of consecutive yellow/black pairs, in either order 6.Number of consecutive yellow/black pairs, in exact order

15. Copyright © 2012 by InteractiveScienceLessons.com <56 :Amber 56-64 :Blue 65-76 :Brown 77-89 :Gray 81-90 :Green 91-98 :Hazel >99Red 1.Total number of blue/green pairs 2.Total number of yellow/black pairs 3.Number of consecutive blue/green pairs, in either order 4.Number of consecutive blue/green pairs, in exact order 5.Number of consecutive yellow/black pairs, in either order 6.Number of consecutive yellow/black pairs, in exact order

16. Copyright © 2012 by InteractiveScienceLessons.com 16. Re-stock box- 4 long reds, 4 long whites, 1 short each of the other 4

17. Come back and visit InteractiveScienceTeacher.com for everything you need for every lesson: Videos- where I show you how to present each lesson PowerPoints Teacher Notes Student Handouts