Chapter 14 Outline

Human Genetics

Karyotypes, Down syndrome, sex chromosome abnormalities, autosomal genes, sex-linked genes, and polygenic inheritance 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.

Counting the Chromosomes (p. 212)

1. Describe how a karyotype is prepared, what it consists of, and how it is used.

2. Describe Down syndrome, its symptoms, its causes, and its relation to the age of the

mother.

3. List and describe different types of sex chromosome abnormalities seen in humans.

Selected Key Terms: karyotype, sex chromosome, autosome, nondisjunction

Considering Autosomal Genes (p. 218)

4. Recognize the autosomal dominant versus the autosomal recessive pattern of

inheritance in a human pedigree chart.

5. Give examples of and describe the most common autosomal genetic disorders in

humans.

carrier, multiple allele

Considering Sex-Linked Genes (p. 226)

6. Recognize the X-linked pattern of inheritance in a human pedigree chart.

7. Give examples of and describe the most common X-linked genetic disorders in

humans.

8. Distinguish between sex-linked and sex-influenced traits.

sex-influenced trait

Considering Polygenic Inheritance (p. 228)

9. Describe the polygenic inheritance pattern and give examples of traits that are most

likely controlled by polygenes.
Return to Chapter 14
Return to Chapter Tools
Return to Biology

Search | How to Order | E-mail Us