During evolution, something happened to increase the size of what organ in humans, relative to that of the chimpanzee?

During evolution, something happened to increase the size of what organ in humans, relative to that of the chimpanzee?

  • Correct Answer: liver
  • stomach
  • lung
  • brain

Explanation: Compared with the nearest evolutionary relative, the chimpanzee, the human has a brain that is huge. At a point in the past, a common ancestor gave rise to the two species of humans and chimpanzees. That evolutionary history is long and is still an area of intense study. But something happened to increase the size of the human brain relative to the chimpanzee. Read this article (http://openstaxcollege. org/l/hugebrain) in which the author explores the current understanding of why this happened. According to one hypothesis about the expansion of brain size, what tissue might have been sacrificed so energy was available to grow our larger brain? Based on what you know about that tissue and nervous tissue, why would there be a trade-off between them in terms of energy use?.

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