AP Biology Chapter 15 Flashcards

13585687260	Evolution	Genetic change in a species over time resulting in the development of genetic and phenotypic differences that are the basis of natural selection; descent of organisms from a common ancestor	0
13585687262	Vestigial structures	remnant of a structure that may have had an important function in a species' ancestors, but has no clear function in the modern species.	1
13585687268	Biogeography	Study of past and present distribution of organisms	2
13585687269	Natural selection	1. overpopulation leads to competition for limited resources 2. mutations lead to heritable variations in a population 3. differential survival and reproduction leads to survival of the fittest (not best)	3
13585687270	Fitness	Ability of an organism to survive and reproduce in its environment	4
13585687271	Adaptation	modification in structure, function, or behavior that makes a species more suitable to its environment	5
13585687272	Artificial selection	Intentional breeding of certain traits, or combinations of traits, over others to produce a desirable outcome by humans.	6
13585687273	Transitional fossils	any fossilized remains of a life form that exhibits traits common to both an ancestral group and its derived descendant group	7
13585687274	Homologous	structures that are of similar origin in different species but have different functions; shows common ancestry	8
13585687275	Analogous	structure that has a similar function but different origins; does not show common ancestry	9