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