natural selection

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