Natural Selection & Evolution

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Across
  1. 3. a feature that allows an organism to better survive in its environment.
  2. 9. differences in the physical traits of organisms
  3. 11. A change in gene frequency over time.
  4. 12. flow movement of genes into/out of a population.
  5. 13. how common the allele is in the gene pool.
Down
  1. 1. The selection of traits that aren’t necessarily good for survival fitness, but without them, you can’t pass on your genes at all because you can’t reproduce.
  2. 2. random change in the frequency of alleles in a population over time.
  3. 4. organisms more fit for their environments will survive and reproduce more offspring.
  4. 5. ultimate source of variation
  5. 6. any change in a DNA sequence.
  6. 7. the combined alleles of all individuals in a population.
  7. 8. when there are NO changes in the allele frequencies in a population over time.
  8. 10. a measure of how well you can survive in your environment