{"id":789,"date":"2023-12-07T21:25:00","date_gmt":"2023-12-07T21:25:00","guid":{"rendered":"https:\/\/cellandcelldivision.com\/?p=789"},"modified":"2024-02-12T21:42:38","modified_gmt":"2024-02-12T21:42:38","slug":"page-185","status":"publish","type":"post","link":"https:\/\/cellandcelldivision.com\/?p=789","title":{"rendered":"Page 185"},"content":{"rendered":"\n<h2 class=\"wp-block-heading has-text-align-center\">Modes and Types of Cell Division<\/h2>\n\n\n\n<p><strong>Section 3.4.<\/strong><\/p>\n\n\n\n<p class=\"has-text-align-center\">As it was mentioned in Section 3. 1, evolution has created<br>different modes and types of cell division, preserving its basic<br>predestination as a mechanism of reproduction of living organisms. Their<br>variety is so great, that it is difficult to be ranged over and explained<br>thoroughly. Essentially they can be reduced to two basic modes: <br>1. Direct division or amitosis.<br>2. Indirect division or mitosis.<br>There are reasons to suppose, that in evolutionary aspect the direct division<br>has preceded mitosis. But because of the combination of historical<br>circumstances, indirect or mitotic division is better investigated and is more<br>widely recognized in cytology than the amitotic. One of the reasons for that is the<br>fact, that during mitosis well-expressed chromosomes and dividing structures<br>are formed. They are easily observable under light microscope and long ago<br>focus the attention of researchers, while during amitosis they are lacking or not<br>yet established. Amitosis is put aside, and its importance is not appreciated<br>properly.<\/p>\n\n\n\n<p>image<\/p>\n\n\n\n<pre class=\"wp-block-verse has-text-align-center\">Figure 3\u20137. Electron micrograph of a \r bacterial cell during the process of \r\ndivision (Courtesy of S. C. Holt; From  Swanson and Webster, 1980). <\/pre>\n\n\n\n<p class=\"has-text-align-center\">Direct division or amitosis is a basic mode of division in prokaryotic cells, which is realized without<br>formation of well-expressed dividing structures (Fig. 3\u20137). For the first time amitotic division is described by<br>Remak (1858), and the term \u201camitosis\u201d is proposed by Flemming (1882) in order to distinguish from the<br>indirect division or mitosis, already known at that time. Except in prokaryotes there are data on amitotic<br>division of nuclei in cells of different tissues and organs in higher organisms (see Hessin, 1967).<br>Some authors doubt the existence of amitosis, others consider it defective mode of division, still others <br>deny it completely considering it an alternated mitosis. Possibly these<br>greatly differing viewpoints have incited Bucher (1958) to entitle his article \u201cDoes the<br>amitosis exist?\u201d in which he definitely accepts the possibility of adequate nuclear<br>division in this way. If accept that amitosis is a process of division without forming the<br>characteristic of eukaryotic cell mitotic chromosomes and division spindle, which serve<br>as instruments for distribution of the genetic material in daughter cells, it can be<br>considered a really existing mode of cell division in the prokaryotic cells, whose<br>mechanisms are not clearly explained.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Modes and Types of Cell Division Section 3.4. As it was mentioned in Section 3. 1, evolution has createddifferent modes and types of cell division, preserving its basicpredestination as a mechanism of reproduction of living organisms. Theirvariety is so great, that it is difficult to be ranged over and explainedthoroughly. Essentially they can be reduced [&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-789","post","type-post","status-publish","format-standard","hentry","category-book"],"_links":{"self":[{"href":"https:\/\/cellandcelldivision.com\/index.php?rest_route=\/wp\/v2\/posts\/789","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=789"}],"version-history":[{"count":1,"href":"https:\/\/cellandcelldivision.com\/index.php?rest_route=\/wp\/v2\/posts\/789\/revisions"}],"predecessor-version":[{"id":800,"href":"https:\/\/cellandcelldivision.com\/index.php?rest_route=\/wp\/v2\/posts\/789\/revisions\/800"}],"wp:attachment":[{"href":"https:\/\/cellandcelldivision.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=789"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cellandcelldivision.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=789"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cellandcelldivision.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=789"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}