Question

List three main factors responsible for the rise of a new species

Answer 1

1 geographical isolation of a population caused by various types of barriers (such as mountain ranges, rivers etc).the geographical isolation leads to reproductive isolation due to which there is no flow of genes btw seperated groups of population
2 genetic drift caused by drastic changes in the frequencies of particular gene by chance alone.
3 variations caused in individuals due to natural selection

Answer 2

1)Natural selection

2)Genetic drift

3)Geographical isolation