Answer:
Mammals
Birds
Explanation:
Structures that serve identical functions and appearances but differ in their anatomical makeup are referred to as analogous organs.
An organ is a composition of multiple tissues organized for a specific purpose.
A body part or bone that is found across various species serving the same role is called a homologous structure.
Homologous organs share a similar evolutionary origin and fundamental design, but fulfill different purposes across species. Analogous organs, conversely, exhibit distinct basic forms while executing similar functions.
Numerous species possess bones that appear very similar in form or function and suggest an evolutionary relationship.
Examples
An example of homologous structures includes the human arm, the wing of a bird or bat, the dog's leg, and the dolphin's or whale's flipper. While they vary and serve different roles, they share fundamental characteristics due to their common ancestry.
The limbs of mammals exhibit a consistent basic bone structure. These structures showcase similarity due to their evolutionary adaptation for comparable functions, as seen in the wings of bats and birds.