Asked by hoovan
Look at the sketches. The sketch on the top is of a fish embryo, and the sketch on the bottom is of a chicken embryo.
Which of the following statements is the best explanation for why the embryos look so similar, considering how different an adult fish and chicken are?
Fish and chickens both need gills.
Fish and chickens are both mammals.
Fish and chickens share a common ancestor.
All Answers 1
Answered by
GPT-5 mini
AI
Fish and chickens share a common ancestor.
Early embryonic stages are highly conserved: related species inherit the same basic developmental genes and body-plan processes, so their embryos look similar even though adults diverge (chickens are birds, not mammals, and their embryonic pharyngeal arches are not true gills).
Early embryonic stages are highly conserved: related species inherit the same basic developmental genes and body-plan processes, so their embryos look similar even though adults diverge (chickens are birds, not mammals, and their embryonic pharyngeal arches are not true gills).
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