Across
- 2. Natural selection ensures that only the _______ will survive long enough to pass on their genes.
- 6. First to realize change is the result of a species' environment, and traits are passed down to offspring.
- 9. Believed species were "fixed" creations arranged by their complexity.
- 11. Evolution is the result of ________ mutations. Organisms do not get to pick and choose their traits.
- 12. When a species evolves to resemble its surroundings
- 13. A group of organisms that share similar traits and can interbreed to create fertile offspring.
Down
- 1. Stated that population size is limited by resources such as food supply.
- 3. Occurs as a population's genes and allele frequencies change over time.
- 4. When one species is able to resemble another.
- 5. Type of selection that is man-made and used to create better traits among crops and livestock.
- 6. Developed a system of grouping organisms by similarities and giving them two-word Latin names.
- 7. The process in which two populations of the same species diverge from one another until they can no longer interbreed and produce fertile offspring.
- 8. Process in which to populations of the same species begin to separate genetically as they accrue different mutations and traits.
- 9. Changes to an organism's phenotype that prove to be beneficial in helping it survive, acquire resources, and reproduce.
- 10. The islands that Darwin explored while sailing with the HMS Beagle.