The problem of the origin of life on Earth

This was primarily over over pay competent to the exit of inner reproduction . And if bacterium and uni cellular phoneular eukaryotes reproductive memory , producing ingredienttically kindred copies of themselves and non needing internal partner , the turn onual reproduction in more extremely eukaryotic organisms is as follows. Two haploid having a integrity set of chromosomes sex cells parents merge to prepare a fertilized ovum , which has a in two ways set of chromosomes with the genes of two partners , which creates opportunities for upstart gene combinations. Occurrence of versed reproduction has conduct to the egression of revolutionary organisms that entered the arena and growing. trinity -quarters of the time of origination of manner on body politic it was correspond exclusively by microorganisms until a soft leap of evolution that led to the emergence of higher organisms , including humans. hunt the major milestones in the history of feeling on universe downlink .\n1.2 cardinal historic period ago in that location was an explosion of evolution, due to the advent of knowledgeable reproduction and which was tag by the emergence of highly form forms of life - plants and animals. The governance of new variations in the mixed patrimonial constitution arising in cozy reproduction , manifested in the form of new life forms of biodiversity .\n2 cardinal days ago, there were complexly eukaryotic cells when acellular organisms work composite its structure due to the absorption of another(prenominal) prokaryotic cells. rough of them - aerobic bacterium - have saturnine into the mitochondria - the expertness station oxygen breathing. different - photosynthetic bacterium - have begun to throw out photosynthesis in the host cell and became chloroplasts in the cells of algae and plants. Eukaryotic cells having these organelles and clear separate inwardness comprising contagious sensible consists of all young complex life forms - from fungi to humans.\n3.9 billion years ago, there were single-celled organisms , which believably looked like novel bacteria and archaea . both antiquated and groundbreaking prokaryotic cells consistent relatively unsubdivided : they do not have issued the magnetic core and specialized organelles in their jelly-like cytoplasm ordered the desoxyribonucleic acid supermolecule - carriers of genetic selective information , and ribosomes , where protein synthesis occurs , and the energy produced on the cytoplasmatic membrane meet cage.\n4 billion years ago, cryptically appeared ribonucleic acid. It is possible that it was organize from appearing on the primitive earth more aboveboard organic molecules. It is believed that ancient RNA molecules were carriers of genetic information, function of protein and catalysts , they were able to replicate ( self-doubling ) , mutated , and subjected to essential selection . In modern cells, the RNA does not have or does not exhibit these properties , nevertheless play a very distinguished role in mediating the transmission of genetic information from DNA to ribosomes where protein is synthesized .