Species is defined as a group of organisms that consist of similar individuals capable of interbreeding or exchanging genes among themselves. On earth, there are currently 8.7 million species living today, however, that number is just a fraction of all organisms that have ever lived. A new species arises due to several cumulative factors.
Factors that could lead to the rise of a new species
Factors that could lead to the rise of a new species are as follows:
(i) Natural selection.
(ii) Process of genetic drift.
(iii) Genetic mutation.
(iv) Geographical isolation.
(v) Environmental factors on the isolated populations.
(vi) Reproductive isolation for a long time.
(vii) Quantum of genetic variant inherited from one generation to next generation.