EVOLUTION
HISTORICAL CONTEXT FOR EVOLUTIONARY THEORY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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penguins stopped flying and wings shrunk, shrunken wings were passed to their offspring
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penguin wings were more suited for swimming, so over time, they became aquatic birds
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Detailed explanation-1: -By the same token, Lamarck believed that disuse would cause a trait to become reduced. The wings of penguins, for example, would be smaller than those of other birds because penguins do not use them to fly. The second part of Lamarck’s mechanism for evolution involved the inheritance of acquired traits.
Detailed explanation-2: -According to Lamarck, organisms altered their behavior in response to environmental change. Their changed behavior, in turn, modified their organs, and their offspring inherited those “improved” structures.
Detailed explanation-3: -Lamarck proposed theories like the inheritance of acquired characters, use and disuse, increase in complexity, etc. whereas Darwin proposed theories like inheritance, different survival, species variation, and extinction.
Detailed explanation-4: -Penguins’ swimming prowess cost them their ability to fly, a new study says. Penguins lost the ability to fly eons ago, and scientists may have finally figured out why. A new study suggests that getting off the ground eventually just took too much effort for birds that were becoming expert swimmers.