Evolution Part 2

Front 1

Biological Species Concept

Back 1

Definition of a species as a population or group of populations whose members can breed with one another in nature and produce fertile offspring

Front 2

Macroevolution

Back 2

Major biological changes evident in the fossil record

Front 3

Speciation

Back 3

Formation of a new species

Front 4

Reproductive Isolation

Back 4

Condition in which a reproductive barrier keeps two species from interbreeding

Front 5

Geographic Isolation

Back 5

Separation of populations as a result of geographic change or migration to geographically isolated places

Front 6

Adaptive Radiation

Back 6

Evolution from a common ancestor of many species adapted to diverse environments.

Front 7

Punctuated Equilibrium

Back 7

Evolutionary model suggesting species often diverge in spurt of relatively rapid change, followed by long periods of little change.

Front 8

Mass Extinction

Back 8

Episode of great species loss

Front 9

Taxonomy

Back 9

Identification, naming, and classification of species

Front 10

Binomial

Back 10

Two-part Latin name of species

Front 11

Phylogenetic Tree

Back 11

Branching diagram, suggesting evolutionary relationships, that classifies species into groups with groups.

Front 12

Convergent Evolution

Back 12

Process in which unrelated species from similar environments have adaptations that seem very similar

Front 13

Analogous Structures

Back 13

Similarities among unrelated species that result from convergent evolution

Front 14

Derived Character

Back 14

Homologous characteristic that unites organisms as a group

Front 15

Cladogram

Back 15

Phylogenetic tree constructed from a series of two-way branch points, suggesting ancestral relationships among species.