speciation

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spe·ci·a·tion

(spē'shē-ā'shŭn),
The evolutionary process by which diverse species of animals or plants are formed from a common ancestral stock.

speciation

/spe·ci·a·tion/ (spe″se-a´shun) the evolutionary formation of new species.

speciation

(spē′shē-ā′shən, -sē-)
n.
The formation of new biological species through the process of evolution.

spe′ci·ate′ v.
spe′ci·a′tion·al adj.

spe·ci·a·tion

(spē'shē-ā'shŭn)
The evolutionary process by which diverse species of animals or plants are formed from a common ancestral stock.

speciation

the process by which new species are formed. Speciation occurs when gene flow has effectively ceased between populations where it previously existed and is brought about by ISOLATING MECHANISMS.see GEOGRAPHICAL ISOLATION.
References in periodicals archive ?
How can we hope to act in concert when we are speciating so intensively and so extensively?
By speciating, it is meant that the fuel permeates as separate
Another critical assumption of sympatric speciation models is that there must be strong disruptive selection for niche use in the speciating populations (Maynard Smith 1966; Felsenstein 1981; Kondrashov and Mina 1986; Diehl and Bush 1989; Rice and Hostert 1993).
Dinosaurs and trilobites rode out environmental change by speciating into many adaptive forms, and persisted 150 million years and 200 million years respectively.