The negative charge on the phosphate group is stabilized as the charge is distributed all over the molecule. As DNA is negatively charged, it gets attracted towards positive electrode or anode in electrophoresis. The oxygen atoms in the phosphate group are negatively charged. In solution, DNA forms a phosphoric ester where a H atom of phosphoric acid is replaced by a nitrogen base and sugar molecule.
homeostasis. the tendency of biological systems to maintain relatively constant conditions in the internal environment while continuously interacting with and adjusting to changes originating within or outside the system.See also balance and equilibrium. adj., adj homeostatÂ´ic.omeostasis. a tendency of biological systems to maintain stability while continually adjusting to conditions that are optimal for survival. Homeostatic mechanisms are necessary for the body to regain its balance when disease or injury occurs and to maintain that balance if it is to remain healthy.
Allostasis is the process of achieving stability, or homeostasis, through physiological or behavioral change.