Da kasoshin lokatan mitosis: su halaye. Meaning of mitotic cell division

A cell sake zagayowar - lokacin daga daya cell division na gaba. Yana faruwa a biyu a jere, saukarwa - Interphase da ta dace division. A tsawon lokaci da wannan tsari ya bambanta dangane da irin Kwayoyin.

Interphase ne a lokacin tsakanin biyu cell rarrabu, lokacin daga karshe division to cell mutuwa, ko asarar ikon raba.

A wannan lokaci, da cell ke tsirarwa, kuma ya maimaita ta DNA, kazalika da mitochondria da plastids. A Interphase wuce gina jiki kira , da sauran hanyoyin gudanar da mahadi. A mafi maida kira tsari ne da aka nuna a kira Interphase. A wannan lokaci, biyu nukiliya chromatids, aka adana makamashi da cewa za a yi amfani da lokacin da division. Har ila yau, an kara yawan kwayoyin halitta da kuma centrioles.

Interphase bautarka kusan 90% na cell sake zagayowar. Bayan shi ya wuce mitosis, wanda shi ne babban hanya na rabo na eukaryotic sel (kwayoyin wanda Kwayoyin dauke da wani tsakiya kafa).

A mitosis, da chromosomes takaice da kuma kafa musamman inji, wanda yake da alhakin uniform rarraba kwayoyin bayanai tsakanin sel cewa an kafa ta wannan tsari.

Cell division faruwa a dama, saukarwa. mitotic mataki halin da mutum halaye da kuma wasu duration.

Da kasoshin lokatan mitosis

Lokacin da Kwayoyin sha mitosis m bulan na mitosis: prophase, metaphase bayan da ta ke, anaphase, telophase ne karshe.

mitotic lokaci halin da wadannan siffofin:

• prophase - bace nukiliya ambulan. A wannan lokaci, da centrioles diverge zuwa sandunan da tantanin halitta da kuma chromosomes takaice (compacted).
• metaphase - Amfani halin maximally compacted chromosomes cewa an hada da biyu chromatids a ekweita (tsakiya) cell. Wannan sabon abu ne da ake kira metaphase farantin. Yana yiwuwa a bincika chromosomes karkashin wani microscope suna da kyau da aka nuna. A metaphase na mitosis auku kuma hašawa daya karshen dogara sanda zaren zuwa centromeres na chromosomes sauran karshen - ga centrioles.
• anaphase - aka nuna shi ne rabuwar da chromosomes a chromatids (su wãtse zuwa daban-daban sandunan). Kamar wancan chromatids zama raba chromosomes, wanda ya kunshi daya kawai chromatid thread.
• telophase - halin decondensation chromosomes da kuma samuwar kusa da kowane chromosome na wani sabon nukiliya ambulan. dogara sanda filament bace a cikin nucleus din bayyana nucleoli. A telophase da cytokinesis kafa, wanda shi ne wani rabo daga cikin cytoplasm tsakanin 'yar Kwayoyin. Wannan tsari ne da za'ayi a cikin dabbobi saboda da musamman tsakiyan nonon kwarin kunya (kugu, wanda ya raba cell a biyu). A shuka Kwayoyin cytokinesis aiwatar cell farantin bayar da da Golgi hadaddun.

Mene ne akanta na mitosis tsari?

Da kasoshin lokatan mitosis sauƙaƙe m watsa kayyade bayanai don 'yar Kwayoyin, ko da kuwa da yawan rarrabuwa. Kamar haka kowane daga cikinsu ya karbi daya chromatid da taimaka kula da daidaito yawan chromosomes a duk Kwayoyin cewa an kafa ta rarraba. Yana bayar da watsa mitosis dorewa sa na kayyade abu.