Question

Listed below are characteristics that serve as evidence of shared ancestry between fish and reptiles. Select the option that applies only to embryos rather than adults.(1 point) Responses scales as a form of skin scales as a form of skin spines and tails spines and tails gill slits that turn into gills gill slits that turn into gills hatch from and lay eggs

Answer 1

The characteristic that applies only to embryos rather than adults is gill slits that turn into gills. In embryos of both fish and reptiles, gill slits are present, but in reptiles, these slits do not develop into functional gills as they do in fish. In adults, reptiles do not have gill slits.