Across
- 1. alleles present in an individual.
- 4. number of differences in DNA among individuals within a species or population.
- 6. observable characteristics.
- 7. variations of a gene.
- 8. a key mechanism of evolution where organisms better adapted to their environment tend to survive and produce more offspring.
Down
- 2. conditions where an organism lives.
- 3. ability to survive and reproduce.
- 5. used to predict the probability of genotypes within a mating pair.