Fish, amphibians, reptiles, birds, and mammals have similar embryos.

They all start with gill slits. Fish and some amphibians grow to have gills. Some amphibians, reptiles, birds, and mammals develop lungs to breathe air.
They all start with tails. Fish, some amphibians, reptiles, and birds grow tails. Humans do not keep their tails.
Fish and reptiles develop scales. Amphibians, birds, and humans have skin. Birds have feathers, and humans have hair.

With which animal do humans exhibit the most linear relationship?(1 point)
Responses

amphibians
amphibians

reptiles
reptiles

birds
birds

fish
fish
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1 answer

Humans exhibit the most linear relationship with amphibians. This is because humans, as mammals, share more developmental characteristics with amphibians in terms of embryonic development, such as the presence of gill slits and the early stages of development. Additionally, humans are more closely related to amphibians in the evolutionary tree compared to the other options provided.