EVOLUTION
MODERN THEORY OF EVOLUTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The fin and wing are homologous, evolving from a common ancestor
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The fin and wing are analogous, evolving from a common ancestor
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Detailed explanation-1: -So, the correct answer is ‘They share a common ancestor’.
Detailed explanation-2: -The flipper of a whale, the wing of a bat, and the leg of a cat are all very similar to the human arm, with a large upper “arm” bone (the humerus in humans) and a lower part made of two bones, a larger bone on one side (the radius in humans) and a smaller bone on the other side (the ulna).
Detailed explanation-3: -Did you know that humans, birds, and bats have the exact same types of bones in their forearm? These organisms share the same forearm bones because they all evolved from a common ancestor. Human, bird, and bat forearm bones include the humerus, ulna, radius, carpals, metacarpals, and phalanges.
Detailed explanation-4: -analogy: The wings of pterosaurs (1), bats (2), and birds (3) are analogous as wings, but homologous as forelimbs. This is because they are similar characteristically and even functionally, but evolved from different ancestral roots.