Is when different organisms evolve similar characteristics while
is when similar organisms evolve differently.

a: divergent evolution
b: convergent evolution
c: coevolution

Convergent evolution is when different organisms evolve similar characteristics while divergent evolution is when similar organisms evolve differently.

Convergent evolution is the process whereby organisms of different lineages (not closely related) independently evolve similar characteristics due to their adaptation to similar environments, while divergent evolution is the process whereby related organisms from the same common ancestor evolve and acquire different traits which leads to the formation of new organisms.

answer; /// i believe the name your looking for is called (plaque)or check good luck