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JAMB Biology 1994 Question 50

Question 50

Evolution

The anatomical evidence usually used in support of the evolutionary relationship among whales, human, birds, and dogs is the possession of

  1. A.thick skin
  2. B.pentadactyl limb
  3. C.tail
  4. D.epidermal structures.
Show the answer and explanation

Answer: B (pentadactyl limb)

Explanation

Whales, humans, birds and dogs all have limbs built on the same five-digit plan, showing they share a common ancestor.