Across
- 4. A permanent alteration in the DNA sequence that makes up a gene
- 5. Twins that come from the same egg.
- 7. Environmental influences on gene expression that do not change the DNA sequence
- 8. A statistical estimate of how much variation in a phenotypic trait within a population is due to genetic variation among individuals.
- 9. Genetics A field examining the genetic and environmental contributions to individual differences in behavior.
- 10. The biochemical units of heredity that make up chromosomes
Down
- 1. Thread-like structures in the nucleus that contain DNA; humans typically have 23 pairs.
- 2. Environmental vs. Genetics
- 3. Twins that do not come from the same egg.
- 6. The complete instructions for making an organism