Allopatry

Definition
noun
The occurrence of population of related organisms in separate, non-overlapping geographic areas such that members fail to encounter one another, hence, are unable to crossbreed.
Supplement
Allopatry leads to genetic isolation due to geographic separation, and results in the formation of new species over time.
Word origin: ancient Greek allos, other+ Greek patrā, fatherland.

Related forms: allopatry
See also: allopatric speciation, Genetic isolation.

Meiosis and Alternation of Generations

Plants are characterized by having alternation of generations in their life cycles. This tutorial is a review of plant m..

An artist depiction of a Precambrian multicellular life form.

The Evolution of Cell Organelles

The nucleus containing the genetic material, DNA, and the mitochondria, well-identified as the "powerhouse of the cell",..

Freshwater Communities & Lentic Waters

Lentic or still water communities can vary greatly in appearance -- from a small temporary puddle to a large lake. The s..

Hormone Production

Hormones are chemical messengers produced by specialized glands and they were produced by switching on the genes designe..

Geological Periods

Geological periods is a study guide that cites the different geological periods on Earth's timeline. Each has a brief ov..

Cell Biology

The cell is defined as the fundamental, functional unit of life. Some organisms are comprised of only one cell whereas o..