Question

Geographical and reproductive isolation of organisms gradually leads to speciation? Give suitable example

Answer 1

Yes
it is correct that geographical and reproductive isolation of organisms gradually leads to specification. For example we can take two different species of macaque that are present in Madagascar Island and Indian subcontinent. due to the different climatic conditions and different breeding seasons they lead to form a different species

Similarly in reproductive isolation the two different species cannot produce fertile offspring this is because of the two different chromosomal set that cannot interbreed