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12 January, 15:25

Which of these characteristics is common only at the embryonic stage of fish and humans, and is suggestive of a common ancestor between the two? A) presence of lungs B) presence of a tail C) presence of gill slits D) presence of a vertebral column

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  1. 12 January, 16:24
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    it is c) presence of gill slits
  2. 12 January, 16:31
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    C.)

    Explanation:

    All vertebrates have a vertebral column. Lungs are present only in humans. A tail, though not fully developed, exists in humans in the adult stage too. The presence of gill slits at the embryonic stage of both groups suggests an ancient common ancestor.
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