Across
- 2. Type of gene that masks the expression of another.
- 3. Molecule that carries genetic instructions.
- 6. Thread-like structures carrying genetic information.
- 8. Two identical alleles for a trait.
Down
- 1. Darwin’s term for an organism’s ability to survive and reproduce.
- 4. Part of the brain involved in complex thought, perception, and motivation.
- 5. A gene expressed only when paired with another of its kind.
- 7. Process through which species change over generations.