After the simplest organisms appeared, using all the main food layers, including the layers of living beings (and not only each layer individually, but also in various combinations), a situation resembling the final period of geochemical evolution developed. Only here the unit, the individuality, was not a molecule, but a complex aggregate of molecules — a cell, in the depths of which rested the primary molecule, which had "achieved perfection" and was striving to maintain its privileged position. Reproduction of unicellular organisms retains a distant resemblance to crystallization. Under favorable conditions, mites of the same type accumulate, forming colonies linked together by a common origin and habitat. Perhaps, at this stage, random, chaotic (radial, non-directional) mutations were quite enough to create diversity and perfection of organisms. More than a billion years of evolution of the primary biosphere, the tireless activity of creative and stabilizing selection have helped the simplest organisms achieve remarkable complexity and perfection of their structure. There have been significant changes over a long period of time. They mainly concerned the internal structure of the cell, whose appearance finally became approximately the same as that of almost all living cells today: the outer membrane, cytoplasm, mitochondria, and nucleus.


It is possible that ready-made blocks of various "precells" or "protocells" were used to build such a cell. Even then, the cell consisted of formations that varied not only in shape, chemical composition, and function, but also in age. The most ancient molecules are ribonucleic acid and deoxyribonucleic acid. They took shape at the finish line of chemical evolution. At the same time, they acquired a protein shell. Something similar to current viruses has formed. However, now all viruses are parasites. At that time, they were probably both autotrophic and heterotrophic. Perhaps there were even many of them, with a huge variety. The autotrophic ones became completely extinct (were eaten), while the heterotrophic ones have survived to this day, parasitizing higher forms of life. However, something else is also possible: viruses are degenerated, simplified creatures due to constant parasitism (this kind of regression is not uncommon). And we ourselves consist of parts of different ages. Deoxyribonucleic acid molecules are related to viruses, the structure of cells is related to protozoa, the presence of skin cells is related to primitive multicellular cells, a number of internal organs are related to fish, etc. Nature, without further ado, used many proven parts that were already at hand. I just adjusted them to each other.


And it turned out to be a good creation, some elements of which, however, had to be improved. The older components of organisms are usually more stable. They are the chosen ones of natural selection. Young organs and parts are stable, actively changing, and are severely tested by natural selection. In ancient protozoa, the protein chain of deoxyribonucleic acid molecules must have changed and improved intensively in the first place. Slot fans can start with a rich casino bundle: up to €1,950 in bonus credits plus 150 free spins on selected games. During signup, place the 1xbet promo code list today in the middle of the form so the welcome pack is linked before your first deposit. Many packages are tiered, so each top-up can unlock a new slice of the total. Review wagering like x35, allowed games, and max bet limits before spinning. Set a budget and treat it as entertainment.