Kankaaaaaaahajajajajajajajajajajakakakaksksks
This is probably to increase blood supply in the intestines. Blood is a transporter of digested food materials.
Explanation:
They are useful as they can predict the genetic probability of a particular phenotype arising in a couple's offspring. In other words, it can tell you if you will or will not have a certain trait.
organisms are always in competition for resources such as food and water or simply just for space.
They build up Muscle Tissue :)
