Vocab quiz

3. form of reproductive isolation in which two populations are separated by geographic barriers such as rivers, mountains, or bodies of water, leading to the formation of two separate subspecies
7. structures that are similar in different species of common ancestry
8. comprises behavioral, physical, and genetic barriers that prevent different species from breeding and producing fertile offspring
10. change over time; the process by which modern organisms have descended from ancient organisms
11. the number of times that an allele occurs in a gene pool compared with the number of alleles in that pool for the same gene
12. form of natural selection in which individuals near the center of a distribution curve have higher fitness than individuals at either end of the curve
16. form of reproductive isolation in which two populations develop differences in courtship rituals or other behaviors that prevent them from breeding
17. when individuals select mates based on heritable traits
18. natural selection in which individuals at the upper and lower ends of the curve have higher fitness than individuals near the middle of the curve
19. a biological feature—such as an organ, bone, or appendage—that has lost most or all of its original function through evolution
20. heritable characteristic that increases an organism's ability to survive and reproduce in an environment

1. form of natural selection when individuals at one end of a distribution curve have higher fitness than individuals in the middle or at the other end of the curve
2. preserved remains or traces of ancient organisms
4. formation of a new species
5. selective breeding of plants and animals to promote the occurrence of desirable traits in offspring
6. process by which organisms that are most suited to their environment survive and reproduce most successfully; also called survival of the fittest
9. how well an organism can survive and reproduce in its environment
13. all the genes, including all the different alleles for each gene, that are present in a population at any one time
14. body parts that share a common function, but not structure
15. form of reproductive isolation in which two or more species reproduces at different times