{"id":764,"date":"2023-12-06T22:48:33","date_gmt":"2023-12-06T22:48:33","guid":{"rendered":"https:\/\/cellandcelldivision.com\/?p=764"},"modified":"2023-12-06T22:50:23","modified_gmt":"2023-12-06T22:50:23","slug":"cell-division-chapter-3","status":"publish","type":"post","link":"https:\/\/cellandcelldivision.com\/?p=764","title":{"rendered":"Page 176"},"content":{"rendered":"\n<h2 class=\"wp-block-heading has-text-align-center\">CELL DIVISION <br>CHAPTER 3<\/h2>\n\n\n\n<h2 class=\"wp-block-heading has-text-align-center\">Biological Essence and Importance of the Cell Division<\/h2>\n\n\n\n<p class=\"has-text-align-center\"><strong>Section 3.1.<\/strong> Cell division is a unique biological mechanism, through which the<br>reproduction of living organisms is realized. Its biological essence and<br>importance find expression in redistribution of the genetic material in the<br>daughter cells and preservation of the hereditary information in the<br>following generations.<br>In unicellular organisms the cell division is a process of reproduction, since<br>from one mother cell two or more daughter cells are formed and each of them<br>participates independently in the following life cycle. In multicellular organisms,<br>through multiple divisions of the cells in particular tissues and organs the growth<br>and development of individuals is realized, that form specialized regenerative<br>cells \u2014 spores, gametes, eggs, spermatozoa, etc. The following generations are<br>reproduced from single regenerative cells or through their fusion and zygote<br>formation.<br>In the course of evolution different modes and types of cell division are<br>created, in which the basic predestination as a mechanism of reproduction<br>of the living organisms has been preserved. This question will be<br>considered once more further.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Discovery and Insight into the Essence of Cell Division<\/h2>\n\n\n\n<p class=\"has-text-align-center\"><strong>Section 3.2.<\/strong> The discovery of cell division and penetrating its essence is not a single act,<br>but a long process of researchs. A detailed study of the history on this<br>problem is given in the monographs by Katznelson (1939, 1963) and \u201cHistory<br>of Biology\u201d (1972, 1975). According to these literary sources, first of all cell<br>division in filamentous algae is observed in 1832 by the Belgian naturalist<br>Charles Dumortier. In 1835 Hugo von Mohl has described dividing cells in<br>algae of <em>Conferva <\/em>genus (Fig. 3\u20131), but he has not noticed cell nucleus and<br>has not known anything about it. Only several years after K. N\u00e4geli (1842 b)<br>also has described division of cells during pollen grain formation (Fig. 3\u20132),<br>some of them with nuclear structures. In the second part of his publications<br>under the common title \u201cCell Nucleus, Cell Division and Growth of the Cells in<br>Plants\u201d N\u00e4geli (1844\u201446) arrives at the extremely important idea, that \u201cthe<br>mother cell gives rise to two or more daughter cells through the process of<br>division, observed for the first time by von Mohl\u201d. At that time Remak (1858)<br>has also observed division of cells in tissues of animal organisms and<br>erythrocytes of chicken embryos (Fig. 3\u20133).<\/p>\n","protected":false},"excerpt":{"rendered":"<p>CELL DIVISION CHAPTER 3 Biological Essence and Importance of the Cell Division Section 3.1. Cell division is a unique biological mechanism, through which thereproduction of living organisms is realized. Its biological essence andimportance find expression in redistribution of the genetic material in thedaughter cells and preservation of the hereditary information in thefollowing generations.In unicellular organisms [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[6],"tags":[],"class_list":["post-764","post","type-post","status-publish","format-standard","hentry","category-book"],"_links":{"self":[{"href":"https:\/\/cellandcelldivision.com\/index.php?rest_route=\/wp\/v2\/posts\/764","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cellandcelldivision.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cellandcelldivision.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cellandcelldivision.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/cellandcelldivision.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=764"}],"version-history":[{"count":2,"href":"https:\/\/cellandcelldivision.com\/index.php?rest_route=\/wp\/v2\/posts\/764\/revisions"}],"predecessor-version":[{"id":776,"href":"https:\/\/cellandcelldivision.com\/index.php?rest_route=\/wp\/v2\/posts\/764\/revisions\/776"}],"wp:attachment":[{"href":"https:\/\/cellandcelldivision.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=764"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cellandcelldivision.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=764"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cellandcelldivision.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=764"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}