If these species adapted to survive without the need for a stomach, the genes for its function could then be lost by mutation over time without ill effect. These genes can be energetically costly ...

If these species adapted to survive without the need for a stomach, the genes for its function could then be lost by mutation over time without ill effect. These genes can be energetically costly ...

Read on to learn more about the cardia of the stomach, including its location and function, as well as how certain conditions can affect it. The cardia of the stomach is not a specific organ but a ...