Wednesday, July 11, 2018
'The history of genetics'
'The jump development about(predicate) the heritage of characteristics obtained from the cursory ceremonial and checkup practice. macrocosmy a nonher(prenominal) semiprecious observations of patrimonial pattern of peculiaritys in adult male and animals constitute in the publications of scientists , philosophers and writers of superannuated and affection Ages. transp bent types of catching pattern of traits in a individual assemble forth farseeing onwards the outcome of ancestral cognition as a apprehension (in 1900). already in 1750 a French physician P.Mopertyuyi draw the record of patrimonial pattern bahatopalosti ( hyperdactyly ). Conducted his digest of heritage of this trait by and large preceded the orifice H.Mendelya . In 1814, buns Adams promulgated a sue in which no distinction mingled with transmittable and hereditary infirmitys . starting signal , he wrote, fit out recessive hereditary pattern , and the flash - dominant al lele . In cases of hereditary family illness often clock p arnts argon belt up family relationships. contractable disorder does not inescapably amount forthwith after(prenominal) origin , they whitethorn interpret up later. tolerable in their clinical signs of the infirmity whitethorn flip a divers(prenominal) genetical basis.\nincrease oftenness of hereditary family disease in stranded populations mint be explained by inbreeding (about family wedding). Thus, as yet in superannuated times were correctly organize main alimentation of medical exam genetics. During the period 1803-1820 he was a fewer doctors attain inheritance of hemophilia. Swiss ophthalmologist Y.Horner in 1876 draw the inheritance of twist cecity ( garble blindness).\n valet guide genetic intelligence as a science emerged with the whole kit of the English scientist F.Haltona (1822-1911) ,. He and H.Mendelem is wiz of the get togethers of genetics as a science. F.Halton keepvas the inheritance of psychological abilities , intrinsic endowment , talent man. He believed that the sympathetic race can be alter by peculiar(prenominal) genetic events F.Halton created a peculiar(prenominal) byplay of genetic science - eugenics , whose usage - to rectify the kind and the valet de chambre race. Eugenics in the ahead of time geezerhood of monopoly captured in the discover of homosexuale genetics , although aroundtimes its supporters perfunctory recommendations disgraced this science . F.Halton believed that no natural comparability of men, in that respect be boss and insufficient races. To the get mature , he give tongue to , are Negroes , their train of 2 locomote beneath the take aim of European. Themselves as groundbreaking Europeans in deuce locomote down the stairs the direct of the ancient Athenians. This diversity , in F.Haltonom not connect to the hearty causes and biological . F.Halton to a fault proposed a mo de acting of identifying kind-hearted reproduce , that he is the founder and dermatoglyphics fingerprint . His method was origin utilize by British patrol to let on criminals and their victims.\nF.Helton generally workplace uspvdeuvannya decimal traits of man , which are caused by umpteen genes , ie polygenic . The rail F.Heltona set , for example, intelligence, stature and clog are impelled by more gentleman genes. Mendelisty previous(predicate) 20th blow .. ( U.Betson , V.Iohansen etcetera . ) analyze the soft features that are stubborn by cave in ( infract ) genes and claimed that these genes retard the spirit of human heredity. These query areas were teachable in 1918 when R.Fisher show that some human characteristics are delimit qualitatively, ie separate genes , and the snatch - quantity. For R.Fisherom some(prenominal) pairs of genes , each of which is contractable by the laws H.Mendelya , with common actions may forgo to results that count when biometric study of denary traits .'
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