The diagram shows the embryological development of a fish, salamander, turtle, and chick. The top of the diagram shows the early
embryos of each organism. The bottom of the diagram shows the embryos later in development. What similarities exist between the early embryos of all four organisms? What do these similarities indicate about the organisms?
In the earliest stages of development, all four organisms have a knobby head, gill slits, and a tail. These similarities tell us that all four of these organisms have a common ancestor.
In the earliest stages of development, all four organisms have a knobby head, gill slits, and a tail. These similarities tell us that all four of these organisms have a common ancestor.
