Question
Fri March 01, 2013 By:
 

you said that humans have not evolved from any monkeys or primates and that humans and monkeys both had a common ancestor. but where has that ancestor gone??

Expert Reply
Sun March 03, 2013
That ancestor has become extinct.
Species evolve as offshoots of parent species: they branch out. This tends to happen when they become isolated from the parental species in some way. Entire species do not evolve into new species; their offshoots do—and they can have many branching offshoots.

In some cases, newly evolved species end up out-competing their parental (or sibling) species, driving them to extinction, but by no means in all cases. Otherwise, there would always be exactly the same number of species on the planet.

Also there are monkeys still around because, like us, not all species of monkeys have yet gone extinct.

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