Biology Lecture Ch 23 Vocab

a construct that assumes a species consists of individuals that look alike, and that individuals that don't look alike belong to different species

A concept in which species are thought of in branches on the tree of life

A state in which two populations can no longer exchange genes

a concept where species are groups of actually or potentially interbreeding natural populations which are reproductively isolated from other such groups

the result of two populations coming back together and interbreeding

species that result when a population is divided by a physical barrier

A partition of a gene pool without physical isolation

the duplication of sets of chromosomes within individuals

polyploidy arising from chromosome duplication in a single species

Polyploidy arising from the combining of two different species

barriers acting before fertilization

barriers acting after fertilization

strengthening of pre-zygotic barriers

a region in which genetically distinct populations come together and produce offspring of mixed ancestry

the proliferation of a large number of daughter species from a single ancestor

The situation where evolutionary radiation creates many different species that like in a variety of environments and differ in characteristics