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Which trait is found in early embryos of both birds and humans, but then disappears from each during development?
soft shell
scales
tail
gill slits.
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gill slits
Both bird and human embryos show pharyngeal (gill) slits/arches early on. In fish they become functional gills, but in birds and humans they are remodeled into other structures and disappear.
Both bird and human embryos show pharyngeal (gill) slits/arches early on. In fish they become functional gills, but in birds and humans they are remodeled into other structures and disappear.
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