Adaptation and Evolution Crossword

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Across
  1. 2. Where only the strong survive and the weak die
  2. 3. the accumulation of differences between groups which can lead to the formation of new species
  3. 5. The transfer of alleles or genes from one population to another
  4. 6. Or allelic drift is the change in the frequency of a gene variant (allele) in a population due to random sampling
  5. 7. Where individuals with similar genotypes and/or phenotypes mate with one another
  6. 8. Two different species evolving with similar traits
  7. 9. A property shared between two nucleic acid sequences
  8. 14. The evolutionary process by which new biological species arise
  9. 15. Structure of DNA
  10. 16. Scientific name for DNA
Down
  1. 1. A model that shows the gradual changes to a species
  2. 4. Changes in alleic frequencies over time
  3. 10. The dramatic change in species over a short period of time
  4. 11. A nitrogen-containing molecule having the chemical properties of a base
  5. 12. Major component of DNA
  6. 13. A change of the nucleotide sequence of the genome of an organism