Ch. 14-15-16 Vocab

All living things come from other living things

Living things could arise from non-living things

Type of small aerobic prokaryote was engulfed by and began to live and reproduce inside of a larger anaerobic prokaryote

Development of new types of organisms from preexisting types of organisms over time

Mechanism for descent with modification

A trait that makes an individual successful in its environment

Anatomical structures that occur in different species and that originated by heredity from a structure in the most recent common ancestor of the species

Closely related functions but do not derive from the same ancestral structure

Structure in an organism that is reduced in size and function and that ay have been complete and functional in the organism's ancestors

Relationships by ancestry among groups of organisms

Different species evolve similar traits

Process in which the descendants of a single ancestor diversify into species that each fit different parts of the environment

Evolutionary pattern in which many species evolve from a single ancestral species

Two or more species have evolved adaptations to each other's influence

Individuals with either extreme variation of a trait have greater fitness than individuals with the average for of the trait

Individuals that display a more extreme form of a trait have greater fitness that individuals with an average form of the trait

Individuals with th3e average form of a trait have the highest fitness

Process of species formation; results in closely related species

Physical separation of members of a population

Results form barriers to successful breeding between population groups in the same area

Idea that speciation occurs at a regular, gradual rate

A model of evolution in which short periods of drastic change in species are separated by long periods of little to no change

Phenomenon by which allele frequencies in a population change as a result of random events

Change in the collective genetic material of a population

Principle states that the frequency of alleles in a population does not change over generations unless outside forces act on the population