Chapter 13 Outline

Chromosomes and Genes

Incomplete dominance, codominance, multiple alleles, polygenic inheritance, the chromosomal theory of inheritance, sex chromosomes, linked genes, and chromosomal mutations are topics covered in this chapter.

Chapter Outline

In this chapter outline, the learning objectives and the selected key terms are given for each major head in the chapter.

Going Beyond Mendel (p. 198)

1. Recognize and solve genetics problems involving degrees of dominance, multiple

alleles, and polygenes.

2. Discuss, with examples, the relative influence of the genotype and the environment

on the phenotype.

Selected Key Terms: incomplete dominance, codominance, multiple allele, polygenic

inheritance

Chromosomes Contain Genes (p. 202)

3. Support the chromosomal theory of inheritance by listing similarities in the behavior

of chromosomes and genes.

4. Explain the normal sex chromosome makeup of human males and females and the

manner in which sex is determined.

5. Describe the experimental results that allowed investigators to determine the

existence of X-linked genes.

6. Solve genetics problems involving sex-linked genes.

7. Explain why linked genes do not obey Mendel's laws, and solve genetic linkage

problems.

8. Use the results of crosses involving linked genes to determine the order of genes on

a chromosome.

chromosomal theory of inheritance, autosome, sex chromosome, X-linked, linkage

group

Chromosomes Undergo Mutations (p. 206)

9. Give examples of chromosomal mutations caused by a change in chromosomal

number, and explain how such mutations could occur.

10. Give examples of chromosomal mutations caused by a change in chromosomal

structure, and explain how such mutations could occur.

mutation, polyploid.
Return to Chapter 13
Return to Chapter Tools
Return to Biology

Search | How to Order | E-mail Us