Genetics

12345678910
Across
  1. 4. A permanent alteration in the DNA sequence that makes up a gene
  2. 5. Twins that come from the same egg.
  3. 7. Environmental influences on gene expression that do not change the DNA sequence
  4. 8. A statistical estimate of how much variation in a phenotypic trait within a population is due to genetic variation among individuals.
  5. 9. Genetics A field examining the genetic and environmental contributions to individual differences in behavior.
  6. 10. The biochemical units of heredity that make up chromosomes
Down
  1. 1. Thread-like structures in the nucleus that contain DNA; humans typically have 23 pairs.
  2. 2. Environmental vs. Genetics
  3. 3. Twins that do not come from the same egg.
  4. 6. The complete instructions for making an organism