The convergence in external morphology of dolphins and tuna is attributed to
A) reduced genetic variability in these groups.
B) selection pressures that are common to these groups.
C) reproductive isolation of these groups.
D) identical genes in all three groups.
E) genetic mutation.

Question

Quizplus · Accepted Answer

The convergence in external morphology of dolphins and tuna is due to similar selection pressures in their aquatic environments, leading to analogous adaptations for streamlined bodies to reduce drag while swimming.

The Convergence in External Morphology of Dolphins and Tuna Is