NS/Evo

2. the process by which organisms with variations that help them survive in their environment live longer, compete better, and reproduce more than those that do not have the variations.
7. a fossil that has characteristics of both ancestral organisms and organisms that evolved later.
9. a permanent change in the sequence of DNA, or the nucleotides, in a gene or a chromosome.
10. body parts of organisms that are similar in structure and position but different in function.
15. the study of similarities and differences among structures of living and fossil species.
16. record of Earth’s history from its origin 4.6 bya to the present.
19. all the organisms of the same species that live in the same area at the same time.
20. the age of rocks and geologic features compared with other nearby rocks and features.
21. an adaptation that enables a species to blend in with its environment.

1. body parts that perform a similar function but differ in structure.
3. a fossil representative of a species that existed on Earth for a short length of time, was abundant, and inhabited many locations.
4. reduced form of a functional structure that indicates shared ancestry.
5. number of organisms that a specific environment can support.
6. the abbreviation for deoxyribonucleic (dee AHK sih ri boh noo klee ihk) acid, an organism’s genetic material.
8. the preserved remains or evidence of past living organisms.
11. the science of the development of embryos from fertilization to birth.
12. event that occurs when the last individual organism of a species dies.
13. technology used to manipulate an organism’s DNA by inserting the DNA of another organism.
14. an adaptation in which one species looks like another species.
17. directed breeding to produce plants and animals with desired traits.
18. an inherited trait that increases an organism’s chance of surviving and reproducing in a particular environment.