Evolution of dissimilar features in closely related organisms as adaptations to dissimilar lifestyles, e.g. insect mouth parts.EncyclopediaSeeDivergence
divergent evolution
di·ver·gent ev·o·lu·tion
the process by which a species or gene product gives rise to two or more different products.
divergent evolution
EVOLUTION from a common ancestral form.ThesaurusSeedivergence