1. Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. Chapter 9 Patterns of Genetic Inheritance

2. Gregor Mendel Deduced Laws of Inheritance 9-

4. Figure 9.1 Gregor Mendel examining a pea plant 9-

6. Figure 9.2B Garden pea traits and crosses studied by Mendel 9-

7. Single-Trait Crosses Reveal Units of Inheritance and the Law of Segregation 9-

9. Figure 9.3 Monohybrid cross done by Mendel 9-

11. 9-

12. Figure 9.4 Occurrence of alleles on homologous chromosomes 9-

13. Two-Trait Crosses Support the Law of Independent Assortment 9-

15. Figure 9.5 Dihybrid cross done by Mendel 9-

18. Figure 9.7A One-trait testcross, when the individual with the dominant phenotype is heterozygous 9-

19. Figure 9.7B One-trait testcross when the individual with the dominant phenotype is homozygous 9-

20. Mendel’s Laws Apply to Humans 9-

22. Figure 9.8A Autosomal recessive pedigree 9-

23. Figure 9.8B Autosomal dominant pedigree 9-

27. Figure 9.11A Prepregnancy testing of an embryo 9-

28. Figure 9.11B Prepregnancy testing of an egg 9-

29. Complex Inheritance Patterns Extend the Range of Mendelian Analysis 9-

31. Figure 9.12 Incomplete dominance 9-

34. Figure 9.14 Polygenic inheritance: Dark dots stand for dominant alleles; the shading stands for environmental influences 9-

36. Figure 9.15A Marfan syndrome illustrates the multiple effects a single human gene can have 9-

37. Chromosomes Are the Carriers of Genes 9-

39. Figure 9.16 X-linked inheritance 9-

41. Figure 9.17 X-linked recessive pedigree 9-

43. Figure 9.18 A simplified map of the genes on chromosome 2 of Drosophila 9-

45. Figure 9.19 Example of incomplete linkage 9-