A mitotic sake zagayowar halayyar da ba tsari

Division - wani muhimmin dũkiyar Kwayoyin. Ba tare da wannan tsari, ba shi yiwuwa su yi tunanin wani karuwa a yawan daban-daban micro-kwayoyin ko unicellular halittu. Bugu da kari, shi tabbatar da dawo da kyallen takarda, har ma dukan gabobin da kwayar kwayoyin.

Ya kamata a lura cewa sa na matakai da ya faru a lokacin tsakanin biyu rarrabuwa, da ake kira da cell sake zagayowar. Yana faruwa a saukarwa. Saboda haka, ya dace da halayyar Interphase da mitotic sake zagayowar a cikin abin da cell raba.

Don kula da wani dace adadin kwayoyin abu wuce anya DNA din. Bugu da kari, a cikin dubawa wuce da biosynthesis sunadaran da kuma samuwar muhimmanci cell Tsarin.

Dole ne in ce cewa Interphase fiye da division kanta. Ya kunshi wadannan matakai:

• presynthetic lokaci - ne halin da aiki girma tafiyar matakai, da kira na sunadaran da nucleic acid, da kuma samuwar takamaiman activators roba lokaci. The salula ya kai ta al'ada size, kuma ya mayar bukata domin aiki na organelle. A tsawon lokaci da wannan lokaci - 'yan sa'o'i ko kwanaki.

• Roba lokaci - halin DNA kwafi da kuma kira na histones, wanda ke da alhakin nucleosome marufi da sabuwar hada nucleic acid, kazalika da cire tallafin da chromosomes da centrioles. A tsawon lokaci da wannan lokaci - har zuwa 12 hours.

• postsynthetic lokaci - yana har mitosis, halin da jari na makamashi da kuma gina jiki kira na tubulin, wanda yana da muhimmanci ga cell division. Kammala da lokaci na 2-4 hours.

Bayan ya wuce mitosis Interphase mataki, wanda aka kuma halin da wasu m matakai a cikin abin da ya Kwayoyin suna kafa da kyau-tsare sa na chromosomes.

Shi ne ya kamata a lura da cewa a wannan rana kasance ba a sani ba dalili na ƙarshe na fission tsari. Shi ne ba a sani ba, kuma na inji cewa triggers ta farfado, ko da yake saka hormones wanda ta mataki na mitotic sake zagayowar aka kunna. A dalilai iko da girman da yawan jama'a na Kwayoyin, kuma ba cikakken gane.

A cikin mitotic cell sake zagayowar ne ya rinjayi glucocorticoids. Prolactin, thyrotropin, estrogens da androgens ne ma iya a wasu hanya tasiri cikin division na sel a cikin manufa kyallen takarda.

Shi ne ya kamata a lura da wadannan fasalin benign marurai - domin su halayyar circadian mitotic cell sake zagayowar (yau da kullum). An yi imani da cewa a lokacin da wani ƙari ci gaban auku a karu a ji na ƙwarai da kwayoyin zuwa r. N. chalones - Kwayoyin hanawa.

A cikin division da girman da cell yawan kuma ya rinjayi na ayyuka na lysosomal tsarin, saboda ta enzymes iya zama hallakaswa sakamako.

Ba dole ne a ce cewa samuwar sabuwar Kwayoyin shi ne dogara a kan irin nama, rinjayar waje dalilai da physiological jihar na jiki, don haka a wasu lokuta kana iya samun wasu mutum halaye, halin da kara girma daga cikin cell yawan ko da karewa kuma da tafiyarwa.