Evolution and Natural Selection

2. ability of an organism to survive and reproduce in its environment
4. group of similar organisms that can breed and produce fertile offspring
5. the total collection of genes in a population at any one time in an inbreeding population
7. the process of forming new allelic combinations in the reproduction of offspring through the shuffling of genes
9. the accumulation of differences between groups
12. a group of organisms of the same species in a given area
13. inactivity resulting from a static balance between opposing forces
15. genes from one organism are transferred into the DNA of another organism in order to produce an organism with desired traits
16. English natural scientist who formulated a theory of evolution by natural selection (1809-1882)
18. a trait that helps an organism survive and reproduce
19. disappearance of a species from all parts of its geographical range
20. an organism that is genetically identical to the organism in which it was produced
21. the branch of biology that deals with the structure of animals and plants

1. a change or alteration in form or qualities
3. The process of selecting a few organisms with desired traits to serve as parents of the next generation
6. any change across successive generations in the heritable characteristics of biological populations
8. A form of natural selection in which individuals with certain inherited characteristics are more likely than other individuals to obtain mates
10. the gradual, nonrandom process by which biological traits become either more or less common in a population as a function of differential reproduction of their bearers
11. A plant or animal that has beed trained or adapted to life with and to the advantage of humans; not wild
14. any difference between individuals of the same species
17. the evolution of a biological species