What Is the Best Evidence Currently Available That Tetrapod Limbs

question 19

Multiple Choice

What is the best evidence currently available that tetrapod limbs evolved from fish fins?

• A)These structures are located in similar places on these animals.
• B)Molecular genetic evidence reveals regulatory enzymes that are homologous in fish and tetrapods.
• C)There are enough transitional species available to make the link obvious.
• D)Fish and tetrapods have many similarities-including reproductive and feeding tactics-that support the link.
• E)None of the above currently support the conclusion that tetrapods evolved from fish.

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