Explain how one population can give rise to two different species.?

Question

Explain how one population can give rise to two different species.?

Answer 1

One population can give rise to two different species because they can have something called a mutual relationship, where they benefit from each other, you can have a symbiotic relationship and another type i forget, anyway the answer to your question is that they have a mutual relationship so they benefit form each other in one population  

Answer 2

If there's geometrical isolation then the two different groups of animals will have different environmental conditions so they'll have to adapt to live in different climates or feed in different ways. Within a species there is variation which may be due to random mutation of alleles (gene's/DNA), these variations can produce selective advantages so the ones with the advantages are more likely to survive and reproduce so their advantageous alleles will be passed on and the frequency in the population will increase. If two animals can't breed to produce fertile offspring then they are classed as different species, this will happen over time because of the variations.

Answer 3

Well there are many examples of varying detail but generally, the population needs to be split into two geographically reproductively isolated groups that over time develop enough differing adaptations so as to remain reproductively isolated even if they renew contact.  Ring species are good examples of this and there are many of these recorded for your perusal.