darien2190 darien2190

28-03-2019
Biology

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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?

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XxMeganSmithxX XxMeganSmithxX

28-03-2019

The embryos of many kinds of animals have gills slits. Gill slits developed into gills in fish and into ears of mammals. Relating in thinking there are ancestors.

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