GENETICS AND EVOLUTION
EVOLUTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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homologous structures
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analogous structures
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homologous and vestigial structures
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analogous and vestigial structures
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Detailed explanation-1: -Based on these images, what can you say about the tentacles of an octopus and the limbs of a lizard? They’re homologous structures.
Detailed explanation-2: -Examples of analogous structures range from wings in flying animals like bats, birds, and insects, to fins in animals like penguins and fish. Plants and other organisms can also demonstrate analogous structures, such as sweet potatoes and potatoes, which have the same function of food storage.
Detailed explanation-3: -An example of homologous structures are the limbs of humans, cats, whales, and bats. Regardless of whether it is an arm, leg, flipper or wing, these structures are built upon the same bone structure.
Detailed explanation-4: -Adapted from Laumer et al 2019. Tetrapod and octopus limbs evolved independently after their point of common ancestry, so they were not inherited from a common ancestor. Therefore, they are not homologous. The same is true of the grasshopper leg and the sea star arm.
Detailed explanation-5: -Final answer: (C) Forelimbs of a Bat and forelegs of a Horse.