Te huru huringa mitotic o te tukanga nei

Division - he taonga nui o ngā pūtau. Te kore tenei tukanga, e kore e taea ki te whakaaro i te hua i roto i te maha o ngā tūmomo moroiti taata rauropi pūtau ranei. I tua atu, whakarite reira te ora o te kopa, me te ara whekau katoa o kaiao multicellular.

Me kï reira e te huinga o ngā tukanga e tango te wahi i roto i te wā i waenganui i nga wehenga e rua, ka karanga te huringa pūtau. E te reira i wahi i roto i ngā wāhanga. Ko te kupu, ko te āhuatanga tika o te interphase me te huringa mitotic i roto i nei tuwhatuwhaia te pūtau.

Ki te mau tonu te nui e tika ana o te rauemi ira haere rearua rāpoi ngota DNA. I tua atu, i te atanga haere te biosynthesis o pūmua me te hanganga o ngā hanganga nui pūtau.

Me mea e ahau e te interphase roa atu i te wehenga iho. Kei a ia ko te whai i ēnei:

• wā presynthetic - kua āhuatanga e tukanga tipu kaha, te ariā o te pūmua, me te waikawa karihi, a hoki te hanganga o activators motuhake wā waihanga. tae te pūtau tona rahi noa, me te whakahokia mai e tika ana mo te mahi o te organelle. Ko te roanga o tenei wā - i te tahi haora ra ranei.

• waihanga wā - āhuatanga tukuruatanga DNA me te kōtuitui o histones, e he kawenga mō te tākai nucleosome o hou synthesized waikawa karihi, me te he tuaruatia ai o nga pūira me centrioles. Ko te roanga o tenei wā - ki runga ki te 12 haora.

• wā postsynthetic - pumau tae noa whāū, āhuatanga e te haaputuputuraa o te pūngao me te kōtuitanga pūmua o tubulin, i te mea faufaa no te wehenga pūtau. Kua oti te wā o 2-4 haora.

I muri i haere whāū interphase taahiraa, e te hoki āhuatanga e etahi tukanga ngā i roto i nei pūtau tamahine e hanga e ki te huinga pai-tautuhi o pūira.

E tano ia tapao e ki tenei ra noho take unknown mo te whakamutunga o te tukanga wehenga. Ko reira unknown me te huarahi e pāngia e tona hë, ahakoa hormones eke e te mahi o te huringa mitotic whakahohe nei te. Ko te āhuatanga whakahaere i te rahi o te taupori o ngā pūtau, e kore ano hoki i matau tino.

I runga i te huringa pūtau mitotic awe e glucocorticoids. E nehenehe o te ara etahi whakaawe i te ano Prolactin, thyrotropin, estrogens me androgens wehenga o ngā pūtau i roto i te kopa ūnga.

E tano ia tapao i te puku mārire e whai ake āhuatanga - mo ratou huringa mitotic pūtau circadian āhuatanga (rā). Kei te whakapono te reira e ka puta te haereraa puku he heke i roto i te tūtohutanga o te rauropi ki te r. N. chalones - pūtau inhibitors.

I runga i te wehewehenga, me te rahi o te taupori pūtau kei te hoki te awe e te mahi o te pūnaha lysosomal, no te mea e taea ona whākōkī hei te kino.

Me mea te reira e te hanganga o ngā pūtau hou he ti'aturi i runga i te momo o te kikokiko, te mana o ngā āhuatanga o waho, me te āhua whaiaroaro o te tinana, pera i roto i ētahi wā kia whai reira etahi āhuatanga takitahi, āhuatanga e te tupu atu o te taupori pūtau te whakamutunga o te tukanga ranei.