GENETICS AND EVOLUTION
EVOLUTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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that we have a common ancestor millions of years ago.
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that all could fly at one time.
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they can’t be related because bats can’t swim.
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that cats love to swim.
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Detailed explanation-1: -Expert-Verified Answer. Homologous structures are defined as similar physical structures, which share a common ancestor.
Detailed explanation-2: -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. Homologies are the result of divergent evolution.
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.
Detailed explanation-4: -Yes, because the homologous human arm and whale flipper indicate a similar descent, so they should have similar anatomies. The whale may have these structures because of their common ancestor with humans had them, but provide no functions. This is similar to the human tail bone.
Detailed explanation-5: -Both the human arm and the cat arm have a single bone in the upper arm, which we call the humerus, followed by two bones in the forearm–the radius on the more medial side and the ulna on the more lateral side. Both arms also have a common wrist structure followed by a grouping of metacarpals and phalanges.