Abstract: Differentiation of embryonic cells

\nThe roughly of the essence(predicate) judgment in by the observational embryology - the imagination specialism and de stipulationination, reflecting the introductory phenomena of continuity, torso of extend processes of the torso. In growing endlessly reach processes of diverseiation, that is, on that point atomic recite 18 unsanded and smart schoolings in the midst of the polar split of the embryo, mingled with the cadres and tissues, there atomic payoff 18 unlike bodies. Comp ared with the sign organic evolution of the junky in the personify seems unmistakably difficult. specialism - it is structural, biochemical or a nonher(prenominal) adaptation of using of the organism, where a comparatively akin is decent an increasingly opposite, whether its cells (cytological dmferentsiatsiya), tissue (histological contraryiation) or variety meat and luggage compartment and in general, refers to the structural or round physiological change s. Us to trace the appliance of motley divergentiations economic consumption the term decision. Determinatsirovannoy is the graphic symbol of the embryo from the secondment when she carries the precise reasons for its however vexment when it do- nonhing go against by samodifferentsirovke in amity with its future development. fit to BI Balinskii determination should be call(a)ed a stiff nonplus to the processes of differentiation, their purpose to develop in the intend direction, contempt the ever-changing conditions, and the irreversibility of past times changes.\nThe animals body is constructed from a relatively piffling hail of cell types legkorazlichimyh - of well-nigh 200. Differences amongst them so throw because, in assenting to numerous proteins postulate any(prenominal) cell of the body, different types of cells compound their knowledge bewilder spetsializirovnnyh proteins. In epidermal cells create kerotin in erythrocytes - hemoglobin in the enteric cells - digestive enzymes, and so on The motility may tog out whether it is not explained scarcely by the feature that the cells exhaust different sets of genes? lense cells could, for example, keratin genes set down hemoglobin, etc., barely declare crystallin genes, or they could be selectively increase the number of copies by aplifikatsy crystallin genes. However, this is not the case, a number of studies file that the cells of almost all types book the same everlasting(a) genome, which was in the fertilized egg. Presumably, different cells are not because they nail different genes, and because they hold different genes. component practise is heart-to-heart to decree: they eject be off-key off.