One explanation for the evolution of insect wings suggests that wings began as lateral extensions of the body that were used as heat dissipaters for thermoregulation. When they had become sufficiently large, these extensions became useful for gliding through the air, and selection later refined them as flight-producing wings. If this hypothesis is correct, modern insect wings could best be described as
A) adaptations.
B) mutations.
C) exaptations.
D) isolating mechanisms.
E) examples of natural selection's predictive ability.
The evolution of an endemic island species from a mainland species.
Drake canvasback stretching wings
Charles Darwin may be dead and gone but a recent write-in campaign has pitted him against Republican
This engraving of the Boston Massacre (1770) became the most reprinted depiction of the event, and p
evolution tree
Insect tracheal system. Chitin rings reinforce branching, air-filled tubes in such respiratory syste