Across
- 1. sequences of biological entities connected by ancestry-descent relationships
- 4. a figurative term for a technique that uses the mutation rate of biomolecules to deduce the time in prehistory when two or more life forms diverged
- 8. a diagram used to represent a hypothetical relationship between groups of animals, called a phylogeny
- 9. the hypothesis that evolutionary development is marked by isolated episodes of rapid speciation between long periods of little or no change.
- 10. the dying out or extermination of a species
Down
- 2. the loss of a predator species
- 3. a diagram that represents evolutionary relationships among organisms.
- 5. the diversification of a group of organisms into forms filling different ecological niches
- 6. the hypothesis that evolution proceeds chiefly by the accumulation of gradual changes
- 7. the formation of new and distinct species in the course of evolution