Fish and Vivian's reptiles birds and mammals have similar embryos. They all start with Gil slits fish, and some amphibians grow to have gills son and Vivian reptiles birds and mammals, develop lungs to breathe air. They all start with tails, fish, sun, amphibians, reptiles, and birds, rot tales humans do not keep their tails, fish and reptiles develop scales and Vivians birds and humans have skin birds have feathers and humans have hair with which animal do humans exhibit the most linear relationship. Would it be reptiles birds fish or amphibians