biology stuff

2. a change in the gene pool of a population due to chance
8. combined genetic information of all the members of a particular population
10. a group of individuals that belong to the same species and live in the same area
12. occurs when natural selection favors one of the extreme variations of a trait
14. genetic drift that occurs after a small number of individuals colonize a new area
15. number of times an allele occurs in a gene pool
16. a person or thing turned to for help or advice
18. seperation due to a physical barrier
19. migration to a new location

1. favors individuals at both extremes of the phenotypic range
2. movement of alleles from one population to another
3. a process in which individuals that have certain inherited traits tend to survive and reproduce at higher rates than other individuals because of thoughts traits
4. isolation between populations due to differeces in courtship
5. migration from a location
6. a trait that helps an animal survive
7. a reduction in the genetic diversity of a population caused by a reduction in size
9. differnece among individuals in the composition of their genes or other DNA segments
11. breeding organisms with specific traits
13. ability of an organism to survive and reproduce in its environment
17. abilitiy of an animal to look like another more harmful animal