evolution

2. permit the organism to preform special function
4. an evolutionary process in which humans consciously select for
5. any change in the DNA sequence of a cell
9. physical features of an organism that help it survive in its habitat
13. the process of selective breeding of plant and animals
15. disguise that allows an organism to blend into its surroundings and avoid being seen

1. a pattern of behavior in which animals travel from one habitat to another
3. cells, tissues, and organs in a body which no longer work
6. the act of changing something or behavior
7. a mechanism of evolution
8. have similar functions but with dissimilar evolutionary origins
10. the change in characteristics of a species over several generations
11. the change in frequency of an existing gene variant in the population due to random change
12. two or more organisms resemble each other
14. the ability to survive to reproductive age find a mate and produce an offspring