The wings of bats and birds and the streamlined body form of sharks and whales represent examples of ________.
A) convergence
B) reversal
C) outgroups
D) a clade

Question

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Convergence refers to the independent evolution of similar traits in unrelated organisms, such as the wings of bats and birds or the streamlined body forms of sharks and whales. Reversal refers to the loss of a trait in a lineage followed by its re-evolution later on. Outgroups are species that are closely related to but not part of a particular clade, while a clade is a group of organisms that share a common ancestor and all of its descendants.

The Wings of Bats and Birds and the Streamlined Body