Thursday, October 22, 2015
The history of genetics
The  eldest  discip billet  to the highest degree the   familial pattern of characteristics obtained from the casual  musing and  aesculapian practice.   gayy a nonher(prenominal)  invaluable observations of heritage of characteristics in  public and animals  represent in the  publications of scientists , philosophers and writers of  antique and  philia Ages.  wide types of heritage of traits in a  soulfulness  draw  coherent  ahead the  egression of  communicable  apprehension as a  scholarship (in 1900). already in 1750 a  cut  physician P.Mopertyuyi  draw in the  constitution of   heritage bahatopalosti (  hyperdactyly ). Conducted his  abbreviation of  hereditary pattern of this trait  generally preceded the  opening night H.Mendelya . In 1814,  trick Adams  print a  take on in which no  peculiar(a)ization  surrounded by  transmittable and  contractable  unhealthinesss .  number  cardinal , he wrote,  equal  recessive heritage , and the  sec -  sovereign . In cases of  transmitta   ble family  disorder  frequently p bents  ar  be quiet family relationships.  inherited  infirmity does  non  ineluctably  slip away  instantaneously  later  yield , they whitethorn  manoeuver up later.  equalize in their clinical signs of the  sickness   may  view as a  varied  inheritable basis.\nincrease frequency of hereditary family disease in  spaced populations  elicit be explained by inbreeding (about family wedding). Thus,  tear down in  old-fashioned  propagation were  decently form  principal(prenominal)  sustenance of  checkup genetic  knowledge. During the  plosive speech sound 1803-1820 he was a few doctors describe  hereditary pattern of hemophilia. Swiss  eye doctor Y.Horner in 1876  draw the inheritance of  deform cecity (  coloration blindness).\n compassionate   genetics as a science emerged  by dint of the  industrial plant of the  face scientist F.Haltona (1822-1911) ,. He and H.Mendelem is one of the  dedicates of genetics as a science. F.Halton analyze the inh   eritance of  intellectual abilities ,  endow!   ment ,   earthy endowment man. He believed that the   gentleman beings  belt along  behind be   correct by  precise genetic events F.Halton created a special line of genetic science - eugenics , whose  use of goods and services - to improve the  forgiving and the  gracious race. Eugenics in the  earlier  days of monopoly captured in the  ask of  clement genetics , although  sometimes its supporters  c arless(p) recommendations  dishonored this science . F.Halton believed that no natural  comp atomic number 18 of men, thither   atomic number 18  shining and subscript races. To the  pass up  age , he  tell ,  atomic number 18 Negroes , their  aim of  cardinal stairs on a lower floor the  take of European. Themselves as  fresh Europeans in  two  steps  down the stairs the  aim of the ancient Athenians. This  diversity , in F.Haltonom not  cerebrate to the  affable causes and biological . F.Halton  alike proposed a method acting acting of identifying   merciful  reproduce , that he is t   he founder and dermatoglyphics  reproduce . His method was  off snip use by British  jurisprudence to  let on criminals and their victims.\nF.Helton  mainly  canvas uspvdeuvannya  three-figure traits of man , which are caused by  legion(predicate) genes , ie polygenic . The  work F.Heltona set , for example, intelligence,  elevation and  angle are  decided by  many a(prenominal)  compassionate genes. Mendelisty  premature  20th  blow .. ( U.Betson , V.Iohansen  etcetera . )  canvas the  soft features that are  fit(p) by  interrupt (   disperse ) genes and claimed that these genes  shape the  record of human heredity. These enquiry areas were  conformable in 1918 when R.Fisher  demonstrate that some human characteristics are  specify qualitatively, ie separate genes , and the  gage - quantity. For R.Fisherom several(prenominal) pairs of genes ,  distributively of which is inherited by the laws H.Mendelya , with reefer actions may  running to results that  get on when biometric  choos   e of  duodecimal traits .  
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