This states that chromosomes drive the genetic heredity of living organisms. Chromosome behavior takes part in segregation, assortment, and sometimes linkage.

A heterotroph is an organism that eats plants or animals for nutrients and energy. The words is derived from Greek as hetero means other and trophe means nourishment. Organisms are either autotrophs or heterotrophs.

This is the process of breaking down complex substances within a living organism into smaller ones. This process also releases energy unlike anabolism.