Biology Crossword

4. artificial selection as practiced by farmers is also called
5. changes in species over time
8. average is best
12. joint published with Darwin
14. French naturalist who proposed that evolution was the refinement of traits that equip organisms to be successful
15. group of similar organisms that can breed and produce fertile offspring
16. the geographic distribution of species
18. one who comes down from a common ancestor
19. a group of organisms of the same species populating a given area
21. a measure of how well an organism can survive and reproduce in its environment
23. inherited characteristic that increases chances of survival
24. a well-tested explanation that unifies a broad range of observation

1. the variety of alleles and traits in a population
2. natural selection on single-gene traits can lead to changes in
3. tailbone of a human
6. both extremes are best but average is bad
7. preserved remains or evidence of an ancient organism
9. individuals that are better suited to their environment survive and reproduce most successfully
10. location where Darwin spent time studying variations
11. an ancestral species from which later species evolved
13. credited with the theory of evolution
17. Darwin viewed the fossil record as
18. one extreme is the best
20. the comparison of body structures in different species
22. colonization of a new habitat by a small group of individuals