Across
- 2. branching points in phylogenies, usually extinct
- 4. part of a phylogeny that connects nodes
- 8. small evolutionary changes, changes in allele frequencies
- 9. gene family that determines body regions in embryos
- 13. structures that are reduced in size and function
- 14. superficially similar but not from common ancestry
- 15. traits derived from a common ancestor
- 16. trait that increases survival and/or reproduction
- 17. credited along with Darwin for evolution by natural selection
- 18. dating without age estimate, deeper is older
- 19. lifetime reproductive success of an individual
- 20. genetic change in a population over time
- 21. large evolutionary changes involving speciation and extinction
Down
- 1. study of organism's distribution patterns
- 3. mechanism of most evolution, not all survive
- 5. type of dating that gives an estimate of age
- 6. diagram showing evolutionary relationships
- 7. often mineralized remains of ancient organisms
- 10. islands where Darwin studied finches and tortoises
- 11. study of the fossil record
- 12. physical location of a gene, allele, or nucleotide