Answer:
They both have embryos with gill slits and tails. They both have embryos that develop into adults. They both have embryos that form from a fertilized egg.
Explanation:
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Answer:
According to embryology, why do fish and birds have a common ancestor? They both have embryos with gill slits and tails. ... They both have embryos that develop into adults. They both have embryos that form from a fertilized egg
Explanation:
