![]() Amitosis has been reported in ciliates, yet its role in mammalian cell proliferation is still unconfirmed. This phenomenon does not involve maximal condensation of chromatin into chromosomes, a molecular event that is observable by light microscopy when sister chromatids line up in pairs along the metaphase plate. As a result, this process leads to random distribution of parental chromosomes in the subsequent daughter cells, in contrast to mitosis, which involves precise distribution of chromosomes in the resulting daughter cells. It is usually accomplished by a simple constriction into two sometimes unequal halves without any regular segregation of genetic material. Several instances of cell division formerly thought to belong to this "non-mitotic" class, such as the division of some unicellular eukaryotes, may actually occur by the process of "closed mitosis", which is different from open or semi-closed mitotic processes, all of which involve mitotic chromosomes and are classified by the fate of the nuclear envelope.Īmitosis is the division of cells in the interphase state. It differs from other forms of cell division (e.g., mitosis, meiosis) as it does not involve the mitotic apparatus (spindle formation) or the condensation of chromatin into chromosomes prior to cellular division. ![]() ( Learn how and when to remove this template message)Īmitosis, also called karyostenosis, direct cell division, or binary fission, is a form of asexual cell division that occurs in most prokaryotes. ![]() ( June 2023) ( Learn how and when to remove this template message) See Wikipedia's guide to writing better articles for suggestions. This article's tone or style may not reflect the encyclopedic tone used on Wikipedia.
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