What factors could lead to the rise of a new species

1.	What factors could lead to the rise of a new species
Answer» 1)Geographical barrier: Extrinsic geographical barriers such as rivers, mountains, etc between two populations which allows no gene flow and leave them to become new two species. 2) Genetic drift: Accidental change in allele frequencies that may result in extinction of poulation or formation of new species from them 3) Natural selection: Selection performed by nature, of the best suited varieties ( having favourable variations)to survive and destruction of the less suited varieties through exposure to environmental stresses.

Answer»

1)Geographical barrier: Extrinsic geographical barriers such as rivers, mountains, etc between two populations which allows no gene flow and leave them to become new two species.

2) Genetic drift: Accidental change in allele frequencies that may result in extinction of poulation or formation of new species from them

3) Natural selection: Selection performed by nature, of the best suited varieties ( having favourable variations)to survive and destruction of the less suited varieties through exposure to environmental stresses.

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