Sympatric speciation occurs when populations of the same species become reproductively isolated from each other due to breeding preferences. This most often occurs in plants that exhibit polyploidy, a disorder in which c... More »

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A geographical barrier can be defined as a naturally occurring formation or body of water that segregates and isolates an area. Common geographic barriers are mountains, glaciers, islands, lakes, oceans, rivers and canyo... 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 »

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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 »

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 »

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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 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 »