Across
- 4. a type of natural selection that favors intermediate (average) phenotypes rather than extreme variations, reducing phenotypic variation in a given population
- 6. a type of genetic drift occurring when a population size is severely reduced for at least one generation by a random disaster such as a fire, flood, famine, or human impact/influence
- 8. an evolutionary model displaying a pattern of long periods of stasis (little or no change) in a species, interrupted ("punctuated") by brief, rapid bursts of significant change and speciation/population diversity
- 9. anatomical features, behaviors, or molecules in an organism that have lost all or most of their original function(s) through evolution
Down
- 1. a diagram representing the evolutionary relationships and descent among species, often based on genetic or anatomical features, that shows common ancestry
- 2. field focused on classifying organisms and determining their evolutionary relationships
- 3. technique used in biology and geology to determine the chronological order (age) of fossils or rock layers
- 5. a branch of biology focused on identifying, naming, and classifying organisms into hierarchical groups (taxa) based on shared traits and evolutionary relationships
- 7. a species or group known to have diverged before the lineage of all other organisms being studied (the ingroup)
- 10. a species or disease that is native to and consistently found in a specific, "restricted" geographical area.