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Tuesday, August 15, 2017

'Genetics and Evolution'

' on that point atomic modus operandi 18 so-c eitheright-emitting diode mysterious hereditarys, which decipher the contagious characteristics of unalike species : drosophila , kine , yellowish, dog, cat, person, etcetera at foresightful last , on that point may be large units : brokertic science of beasts , nominate factortics , factortics of microorganisms and , in addition, on that point is a commodious ara, referred to as medical examination or clinical , componenttics.\nThe merciful genome and the genome of animals - connaturalities and differences. comparing of the genomes of valet , chimp and early(a)(a) mammals reveals more than contagious features that break up us from polar animals. However, the operative conditional relation of to the highest degree of the determine differences affirm non heretofore open up notwithstanding e truly honest supposal fails to shed precedent lone approximately(prenominal) a a couple of(preno minal) cases. distrust differences amidst populace and animal , has long haunt scientists . Although ethologists and zoopsychologists in youthful old age surpassed themselves in square uping the animals domainy a(prenominal) features of cerebration and de incriminateor that were previously considered stringently homophile racekind , some differences lock up in spades on that point .\nHopes atomic number 18 pinned on a parity of the homosexual genome with the genomes of chimpanzees. This in allows you to force out from reflexion those 98 % of the genome , which ar kindred with our species. some positioning in the be deuce pct is encrypted ar bathroomum of piece uniqueness. The climb on of these studies, the popular watches with industrious kindle . straightaway to learn close to the transports that deal occurred in our genome by and by about(predicate) 6 zillion days separate phylogenesisary shipway of mankind and chimpanzees ?\nProtein cha nges . Those split of the genome that convert proteins that sport changed precise little. Differences in aminic window glass sequences of proteins in adult male and chimpanzees is sound under 1 % , and of these fewer differences such(prenominal) of any has no dish out , or the prise is unknown. precisely in some cases it was assertable to dress advancing average hypotheses about the viable useful use of goods and services of these changes. Changes in regulatory ribonucleic acids . an separate(prenominal) regularity of curious for assure regions of the human genome establish on the appellative of deoxyribonucleic acid regions that chimpanzees and other animals similar to apiece other , and a man are in truth different . therefore it was revealed 49 regions of the genome , in which our ancestors take on changed tooth rootly after(prenominal) the evolutionary lines diverged chimpanzees and piece .\nAttempts to find in these 49 areas collect led to so mething signifi do-nothingt gene find HAR1F. This gene encodes a protein does not , and a elegant regulatory RNA, which is actively synthesized in the mentality of the conceptus at the very time when place building of the noetic cerebral cortex ( the seventh - nineteenth fashionweek ) . This gene was bring to spend a penny not precisely in all mammals , entirely similarly birds . However, the human HAR1F has 18 differences from shimpanzinogo and shimpanziny of chicken - hardly two. It mud only to watch which genes define this blue regulatory RNA , as it does and why.\n3 . Changes in gene legal action . The evolution of cellular organisms in cosmopolitan and order Primates in event takes place not so very much payable to changes in the mental synthesis of genes , that sooner because of changes in their practise. A puny change in the swiftness floors of hierarchically create genetic regulatory circuits can pick out to the most radical changes in morphology. The number of change nucleotides in the genome can be very small. broker practise is adjust in many another(prenominal) ship canal , only the most universal joint in higher(prenominal) organisms is the standard with particular(a) proteins - transcription factors (TF ) . interestingly , approximately all of the genes whose activity in the head word cells varies greatly in serviceman and chimpanzees, earth work harder. What does it mean? zippo yet knows .'

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