Across
- 3. — the way a person acts or responds.
- 5. — a characteristic of a person such as height or behavior.
- 8. — differences between individuals.
- 9. — the period during which a fetus develops in the womb.
- 12. — the legal process of raising a child born to other parents.
- 14. — one of two children born at the same time from the same pregnancy.
- 15. — similarity between individuals.
- 16. — the study of how environmental factors affect gene activity.
- 17. — a proposed explanation that can be tested.
- 20. — the intake of food needed for growth and health.
Down
- 1. — a unit of heredity that carries biological information.
- 2. — a group of individuals in a study.
- 4. — the number of births in a population.
- 6. — the pattern of thoughts, feelings, and behaviors.
- 7. — a change in genetic material.
- 10. — systematic investigation to discover facts.
- 11. — the study of heredity and genes.
- 13. — external conditions influencing development.
- 18. — a person’s sense of self.
- 19. — a widely held but false belief.