Active Reading: “Themes of Biology” Ch. 1: “Biology and You” Active Reading: “Themes of Biology”

SKILL: READING EFFECTIVELY 1. 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 EFFECT 4. 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 EFFECT 6. 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 Choice 8. A change in the DNA of a gene is called a ___ a. cancer. b. trait. c. mutation. d. sex cell. Answer: c