The steps of speciation are reproductive isolation and genetic change. In many cases, reproductive isolation occurs prior to genetic changes, but they can happen simultaneously as well. In either case, speciation results... More »

Speciation occurs when organisms diverge after experiencing different sets of environmental pressures. Organisms belong to different species when they can no longer interbreed to produce viable offspring. More »

Allopatric speciation is the division of species by geographical means. In the process of allopatric speciation, an extrinsic factor, or factors, prevents two or more groups of organisms from interacting or mating with e... More » Science Biology

Geographic isolation causes speciation because members of a population are unable to reproduce with one another. This reproductive isolation prevents mixing of the gene pool and allows each population to evolve along dif... More »

The biggest factor speeding up speciation is geographic isolation of populations. When a single species is divided into two or more groups so that the members of one group cannot breed with another, this allows each grou... More »

An adaptation is defined by National Geographic as a genetic change in the structure or habits of an organism to allow it to survive, protect itself and reproduce in its environment. Physical adaptations, such as plants ... More »

Sympatric speciation is an evolutionary process that occurs when brand new species evolve from one common ancestral species. The newly evolved species occupies the same geographical location that the common ancestor inha... More » Science Biology