Some traits are similar between different species, and taxonomists describe some of those similarities as “plesiomorphic.” By th
is term, taxonomists mean _ The trait has been changed in one or the other of the species since the time that they last shared an ancestor in common The trait has remained the same in one or the other of the species since the time that they last shared an ancestor in common The trait is not dominant, and will eventually disappear from the population The trait is interfering with reproductive success, and will disappear from the population very soon
Plesiomorphic characters or the traits refers to those that are shared by various clades in a specific group. These traits share a common ancestor, they have been the same in each of the species of the group and also in other groups. Like hair is a specific feature, which is shared by all the mammals from their initial stage, however, subsequent evolution has produced many clades afterward.
