Question

what factor could lead to the rise of a new species

Answer 1

The factors which may lead to rise of new specie are:-
Genetic Drift
Natural Selection
Geographical isolation
Reproductive isolation for a long time
Hope this helps you !!

Answer 2

Factors that could lead to the rise of a new species are as follow :
(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 the next.