Structures as Different as Human Arms, Bat Wings, and Dolphin

question 18

Multiple Choice

Structures as different as human arms, bat wings, and dolphin flippers contain many of the same bones, these bones having developed from very similar embryonic tissues. How do biologists interpret these similarities?

• A) by identifying the bones as being homologous structures
• B) by the principle of convergent evolution
• C) by proposing that humans, bats, and dolphins share a common ancestor
• D) Three of the statements above are correct.
• E) Two of the statements above are correct.

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Definitions:

Repudiated

Refused to accept or be associated with; rejected or denied the validity or authority of something.

Contract

A lawful pact made between two or more parties, which can be upheld by legal means.

Repudiated

The act of rejecting or disowning a contractual obligation or agreement, often leading to termination of the contract.

Merchant

A business or individual engaged in the trade of goods, services, or commodities for profit.