User blog comment:BannedLagiacrus/Discussion of the Week: Monster Mutations/@comment-3277384-20140429075949/@comment-4212769-20140429094750

This is not entirely true. A mutation doesn't make a new subspecies, many mutations make one. A subspecies actually is not only in some genes different from another. Would you call an albino a subspecies? Or a black panther? Subspecies are defined as adaptative mutation. A random mutation in a group that doesn't give any advantage isn't leading to a subspecies but just a different form of the subspecies it is in already.

One single mutation makes an individual that has a mutation. And this is what is meant here.