1. Copyright © 2009 Pearson Education, Inc. Art and Photos in PowerPoint ® Concepts of Genetics Ninth Edition Klug, Cummings, Spencer, Palladino Chapter 7 Sex Determination and Sex Chromosomes Copyright © 2009 Pearson Education, Inc.

2. Caster Semenya

3. Copyright © 2009 Pearson Education, Inc. 7.1Life Cycles Depend on Sexual Differentiation 7.1.1Chlamydomonas

4. Copyright © 2009 Pearson Education, Inc. Figure 7.1

5. Copyright © 2009 Pearson Education, Inc. Figure 7.2

6. Copyright © 2009 Pearson Education, Inc. 7.1Life Cycles Depend on Sexual Differentiation 7.1.3Caenorhabditis elegans

7. Copyright © 2009 Pearson Education, Inc. Figure 7.4

8. Copyright © 2009 Pearson Education, Inc. 7.2X and Y Chromosomes Were First Linked to Sex Determination Early in the Twentieth Century

9. Copyright © 2009 Pearson Education, Inc. Figure 7.5a

10. Copyright © 2009 Pearson Education, Inc. Figure 7.5b

11. Copyright © 2009 Pearson Education, Inc. 7.3The Y Chromosome Determines Maleness in Humans

12. Copyright © 2009 Pearson Education, Inc. Figure 7.6

13. Copyright © 2009 Pearson Education, Inc. Figure 7.6a

14. Copyright © 2009 Pearson Education, Inc. Figure 7.6b

15. Copyright © 2009 Pearson Education, Inc. 7.3The Y Chromosome Determines Maleness in Humans 7.3.1Klinefelter and Turner Syndromes

16. Copyright © 2009 Pearson Education, Inc. Figure 7.7a

17. Copyright © 2009 Pearson Education, Inc. Figure 7.7b

18. Copyright © 2009 Pearson Education, Inc. 7.3The Y Chromosome Determines Maleness in Humans 7.3.247,XXX Syndrome 7.3.347,XYY Condition 7.3.4Sexual Differentiation in Humans 7.3.5The Y Chromosome and Male Development

19. Copyright © 2009 Pearson Education, Inc. Table 7.1

20. Copyright © 2009 Pearson Education, Inc. Figure 7.8

21. Copyright © 2009 Pearson Education, Inc. Figure 7.9

22. Copyright © 2009 Pearson Education, Inc.

23. 7.4The Ratio of Males to Females in Humans Is Not 1.0

24. Copyright © 2009 Pearson Education, Inc. 7.5Dosage Compensation Prevents Excessive Expression of X-Linked Genes in Humans and Other Mammals 7.5.1Barr Bodies

25. Copyright © 2009 Pearson Education, Inc. Figure 7.10

26. Copyright © 2009 Pearson Education, Inc. Figure 7.11

27. Copyright © 2009 Pearson Education, Inc. 7.5Dosage Compensation Prevents Excessive Expression of X-Linked Genes in Humans and Other Mammals 7.5.2The Lyon Hypothesis

28. Copyright © 2009 Pearson Education, Inc. Figure 7.12

29. Copyright © 2009 Pearson Education, Inc. Figure 7.13

30. Copyright © 2009 Pearson Education, Inc. 7.5Dosage Compensation Prevents Excessive Expression of X-Linked Genes in Humans and Other Mammals 7.5.3The Mechanism of Inactivation

31. Copyright © 2009 Pearson Education, Inc. Figure 7.14

32. Copyright © 2009 Pearson Education, Inc. 7.6The Ratio of X Chromosomes to Sets of Autosomes Determines Sex in Drosophila

33. Copyright © 2009 Pearson Education, Inc. Figure 7.15

34. Copyright © 2009 Pearson Education, Inc. 7.6The Ratio of X Chromosomes to Sets of Autosomes Determines Sex in Drosophila 7.6.1Dosage Compensation in Drosophila 7.6.2Drosophila Mosaics

35. Copyright © 2009 Pearson Education, Inc. Figure 7.16

36. Copyright © 2009 Pearson Education, Inc. Figure 7.17

37. Copyright © 2009 Pearson Education, Inc. 7.7Temperature Variation Controls Sex Determination in Reptiles

38. Copyright © 2009 Pearson Education, Inc. Figure 7.18