Across
- 2. genetic drift seen in small starter populations
- 8. group of interbreeding organisms, same species, same area
- 9. natural selection against one trait extreme
- 10. sum of all alleles in a population, gene ____
- 11. natural selection against both trait extremes
- 12. special case of natural selection to maximize reproduction
- 13. individuals coming and going from populations
- 15. when chromosomal changes introduce a new copy of a gene
- 16. speciation when populations are geographically isolated
- 17. speciation within a population, no geographic isolation
- 18. genetic drift when large populations decline a lot
Down
- 1. study of patterns of inheritance
- 3. when populations of a species can no longer interbreed
- 4. species concept based on successful mating
- 5. evolution by chance events, important in small populations
- 6. gene movement between populations, hinders speciation
- 7. natural selection against the median trait value
- 14. error in DNA replication, source of new alleles