1. Answers: Genes, alleles, nucleotide sequence Questions: – You share 99% of your ___________ with a chimpanzee. – You share 60% of your ___________ with a banana. – 50% of your ___________ came from your mother.

2. What is a gene?

4. Fig. 18.8

5. Draw the cell cycle. Why does the cell cycle matter?

6. Fig. 12.5

7. Mitosis

8. Draw a chromosome as it would look at each stage of the cell cycle.

9. Fig. 5.28

10. Fig. 12.4 Centromere

12. What is a chromosome made of?

13. Fig. 16.21

15. Histones are critical for DNA structure

16. What makes the dominant allele dominant? Sickle cell? Cystic fibrosis? Huntington’s disease? Blood type? Mendel’s wrinkly peas?

17. What is the central dogma of genetics?

18. Fig. 17.4— The Central Dogma of Genetics

19. Transcription Analogy Who is the scribe?

20. Translation Analogy Who is the chef?

21. Fig. 17.25

22. mRNA’s from 5 genes in fruit-fly embryo Why isn’t every gene expressed in every cell?

23. Fig. 18.6 Gene Regulation= Controlling if a gene makes a functional product (protein) or not

24. DNA methylation pg. 358 CH 3

25. http://cnx.org/content/m26565/latest/graphics35.jpg Euchromatin and Heterochromatin

26. Fig. 18.10

27. Fig. 18.11

28. Fig. 18.13

29. Diagram meiosis of the X and Y chromosomes in spermatogenesis… Start with a G1 cell.