Chapter 13

Question 1

adaptation

Answer 1

an inherited character that enhances an organisms ability to survive and reproduce in a particular environment

Question 2

natural selection

Answer 2

a process in which individuals with certain inherited traits are more likely to survive and reproduce

Question 3

evolution

Answer 3

decent with modification: the idea that living species are descendants of ancestral species that were different that present day ones

Question 4

theory

Answer 4

A widely excepted explanatory idea that is broader in scope then a hypothesis generates new hypothesis and is supported by a large body of evidence

Question 5

fossil

Answer 5

A preserved remnant or impression of an organism that lived in the

Question 6

homology

Answer 6

similarity in characters resulting from a shared ancestry

Question 7

homologous structure

Answer 7

structures in different species that are similar because of common ancestry

Question 8

vestigial structure

Answer 8

A feature of an organism that is a historical remnant of a structure that served an important function in organisms ancestors

Question 9

strata

Answer 9

Rock layer formed when a new layer of sediment covers an older one and compresses it

Question 10

molecular biology

Answer 10

The study of biological structures functions and hereditary at the molecular level