Ch. 1: “Biology and Ch. 1: “Biology and You”You”

Active Reading: “Themes of Active Reading: “Themes of Biology”Biology”

SKILL: READING EFFECTIVELY1. Why does the word traits appear in parentheses in

Sentence 1?A: It is a synonym for characteristics that directly precede it.

2. The word genes appears in boldface type in Sentence 2. What does the use of boldface type indicate?

A: It shows that it is a Key Term, or important word, that is defined in the sentence.

3. Based on Sentence 3, how would you define the word heredity?

A: Heredity is the passing of traits from parents to offspring.

SKILL: RECOGNIZING CAUSE AND EFFECT4. A cause-and-effect relationship is

identified in Sentence 4. What is the effect of heredity?

A: It is that children tend to resemble their parents.

5. Another cause-and-effect relationship is identified in Sentence 5. What causes genes to change?

A: Damage to genes causes change.

SKILL: RECOGNIZING CAUSE AND EFFECT6. What relationship is indicated by the

parentheses in Sentence 7?A: The relationship indicated is that an

egg and sperm are types of sex cells.

7. Sentence 8 describes two cause-and-effect relationships. What are they?

A: Mutations in body cells cause disruption in the control of cell reproduction, and disruption in the control of cell reproduction causes cancer.

Multiple ChoiceMultiple Choice

8. A change in the DNA of a gene is called a ___a. cancer.b. trait.c. mutation.d. sex cell.

Answer: c