Question 1 : Define speciation.
(answer acc. to class 10th)
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Speciation is the evolutionary process by which populations evolve to become distinct species. ... There are four geographic modes of in nature, based on the extent to which speciating populations are isolated from one another: allopatric, peripatric, parapatric, and sympatric.
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Speciation is an event that splits a population by evolutionary means into two independent species which cannot reproduce among themselves. Speciation occurs when a population exhibits a continuous change due to changes in the environment. These unit. changes get accumulated over a period of time in a section of population which slowly alter the individual's structure and functions to give rise to a new species. There are two types of speciation namely allopatric speciation and sympatric speciation. New species which arise due to speciation do not interbreed with parents.Individuals of a species if geographically isolated in a new environment, they grow into new species by developing some adaptations.
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