bio chapter 16

2. effect Allele frequency change because of migration
4. Describes hoe well an animal can handle the environment
6. trait Trait controlled by two or more genes; shows a wide variety of phenotypes
9. selection When those at the outer end of curve have higher fitness than middle
10. selection A form of natural selection in which individuals with certain inherited characteristics are more likely than other individuals to obtain mates
12. pool All genes (even of different alleles) coccus in gene pools compared to the total number of alleles in that pool for the same gene
13. selection Nature provides variations and human select those they find useful
15. Process of change over time
16. isolation Type of reproductive isolation in which two organisms have different mating rituals that prevent them from interbreeding

1. equilibrium Allele frequencies in its gene pool
2. Preserved remains or traces of ancient organisms
3. effect Change in allele frequency following a dramatic reduction in size
5. gene trait Trait controlled by only a single gene
7. selection Animals suited for their environment survive and reproduce
8. selection When individuals near the center of the curve have higher fitness than those at either end
11. Any heritable characteristic that helps animal survive
14. drift Random change in alleles
17. frequency The number of times a allele occurs in a gene pool compared to alleles