The Diagram Below Shows the Bone Structure of a Whale

question 31

Multiple Choice

The diagram below shows the bone structure of a whale flipper and a bat wing.Which of the following suggests that these two structures are homologous rather than analogous?

• A) Both the flipper and the wing contain five fingerlike bone projections.
• B) The flipper is formed from the entire front appendage of the whale,but the wing is only formed from the hand part of the front appendage of the bat.
• C) The bones that form the five fingerlike projections in the flipper have much thicker bones than the bones that form these projections in the bat.
• D) The flipper of the whale contains more bones than the wing of the bat.

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