The occurrence of liquid water is frequently considered as the key condition for the origin of life on celestial objects, in particular, on Mars. Meanwhile, DNA formation represents a necessary condition for living matter origination. DNA consists of H, C, O, N, and P. According to the Life Origination Hydrate Theory (LOH-Theory), there exists only one triad of minerals capable of forming substances similar to cells in whole, including DNAs, amino acids, and proteins. This triad consists of methane-hydrate, nitrate ions, and phosphate ions. According to the LOH-Theory, all these minerals are equally necessary for living matter origination and the process of living matter formation could proceed underground only and, after that, living matter could outcrop. In the Earth's near-surface layer, just 5-valence phosphorus is the least abundant element. As for Mars, there is no information on its occurrence on Mars.