natural selection
Across
- 2. the transfer of alleles or genes from one population to another
- 5. the study of the distribution of species.
- 6. a characteristic that helps an organism survive and reproduce
- 7. an organism's collection of genes
- 8. process by which individuals that are better adapted to their environments survive and reproduce
- 10. a random change in genetic material.
Down
- 1. group of individuals of the same species living in the same area
- 3. a group of organisms that can mate with one another to produce fertile offspring
- 4. measures the differentiation between populations for trait variation
- 9. the process in which populations gradually change over time