chapter 6 modern genetics section 2: human genetic disorders what are two major causes of genetic...

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Chapter 6 Modern Genetics Section 2: Human Genetic Disorders What are two major causes of genetic disorders in humans? How do geneticists trace the inheritance of traits? How are genetic disorder diagnosed and treated?

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Page 1: Chapter 6 Modern Genetics Section 2: Human Genetic Disorders What are two major causes of genetic disorders in humans? How do geneticists trace the inheritance

Chapter 6 Modern Genetics

Section 2: Human Genetic Disorders

What are two major causes of genetic disorders in humans?

How do geneticists trace the inheritance of traits?

How are genetic disorder diagnosed and treated?

Page 2: Chapter 6 Modern Genetics Section 2: Human Genetic Disorders What are two major causes of genetic disorders in humans? How do geneticists trace the inheritance

Chapter 6 Modern Genetics

Genetic Disorders

• Abnormal conditions that people inherit through genes or chromosomes

• May be caused by changes in the DNA of genes

• May be caused changes in the overall structure or number of chromosomes

Page 3: Chapter 6 Modern Genetics Section 2: Human Genetic Disorders What are two major causes of genetic disorders in humans? How do geneticists trace the inheritance

Chapter 6 Modern Genetics

A Pedigree

A pedigree is a chart or “family tree” that tracks which members of a family have a particular trait.

Page 4: Chapter 6 Modern Genetics Section 2: Human Genetic Disorders What are two major causes of genetic disorders in humans? How do geneticists trace the inheritance

Chapter 6 Modern Genetics

Pedigree Activity

Click the Active Art button to open a browser window and access Active Art about pedigrees.

Page 5: Chapter 6 Modern Genetics Section 2: Human Genetic Disorders What are two major causes of genetic disorders in humans? How do geneticists trace the inheritance

Chapter 6 Modern Genetics

A Hemophilia Pedigree

The pedigree shows the inheritance of hemophilia, a sex-linked disorder in a family.