Evolution Vocab part 1

A physical structure, present in multiple species, that is similar in function but different in form and inheritance.

A process in which new species develop from preexisting species (biological evolution or macroevolution); a change in the allele frequencies of a population of organisms from generation to generation (genetic evolution or microevolution).

A term the typically describes a species that no longer has any known living individuals

The preserved remains or traces of organisms that once lived on Earth.

A decrease in genetic variation caused by the formation of a new population by a small number of individuals from a larger population.

A change in the allele frequency of a population as a result of chance events rather than natural selection.

A proposed explanation in evolutionary biology stating that new species arise from the result of slight modifications (mutations and resulting phenotypic changes) over many generations.

A physical characteristic in different organisms that is similar because it was inherited from a common ancestor; same form different function

A process in nature in which organisms possessing certain inherited traits are better able to survive and reproduce compared to others of their species.

A proposed explanation in evolutionary biology stating that species are generally stable over long periods of time. Occasionally there are rapid changes that affect some species which can quickly result in a new species.

A process typically caused by the genetic isolation from a main population resulting in a new genetically distinct species.

A physical characteristic in organisms that appears to have lost its original function as a species has changed over time.

features of behaviors, morphology, or genetics which serve to prevent mating or breeding between two different species (e.g. temporal isolation, ecological isolation, behavioral isolation, mechanical isolation, gametic isolation.

A group of individuals of the same species living in a specific geographical area and reproducing.

The lowest taxonomic level of biological classification consisting of organisms capable of reproduction that results in fertile offspring.