Amitosis - Ko te ara o te wehenga pūtau reira

Familiarization ki te kōrero i roto i roto i tēnei tuhinga ka taea te kaipānui ki te ako e pā ana ki tetahi o nga ara o te wehenga pūtau - amitosis. Ka kitea e tatou i roto i ngā āhuatanga o te akoranga o tenei tukanga, whakaaro te rerekētanga i te tahi atu momo o te wehenga me te ake.

He aha te mea amitosis

Amitosis - he momo o te wehenga pūtau tika. Tenei tukanga Ko e tika ana ki te mua wehenga o te karihi ki e rua nga wahi. Heoi, kia mate ano ia i te wā o hanga te muka ki te wehe. puta te ligation kahore tōhau pūpūira. Amitosis - he tukanga tūturu i roto i te pūtau o te kararehe, me ngā tipu, me te kararehe pūtau.

Mai i te hītori, me te rangahau

Robert Remak i roto i te 1841 ka hoatu e te whakaahuatanga o te tukanga amitosis mo te wa tuatahi, engari nui i muri ka haere mai te wā iho. Kua i roto i te 1882 i te kaikoiora me te takenga Tiamana histologist, whakaekea Walter Flemming te ingoa hou o te tukanga. Amitosis pūtau i roto i te āhua he varavara, engari kia maha puta reira, mai te mea te reira e tika ana.

tukanga Āhuatanga

Ka rite ki puta wehewehenga pūtau? Amitosis pea te nuinga ki te puta i roto i ngā pūtau ka heke mahi mitotic. Ko te kupu, ko te huinga o ngā pūtau e kia mate rite ki te hua o te koroheketanga te āhua o te huringa pathological ranei, e taea te whakaroa i tona mate mo etahi wa.

Amitosis - he tukanga i roto i nei te āhua o te karihi i roto i interphase pupuri ratou āhuatanga morphological: e taea te āta kite i te nucleolus, me te tona anga, e kore te te DNA tāruaruatia, pūpūira - he ngaro te pūmua, DNA me te RNA kore spiraleziruyutsya me te tāutu o pūira i roto i te karihi o ngā pūtau eukaryotic.

He he he wehewehenga pūtau autaki - whāū. Amitosis, i roto i te rerekē, ka taea te pūtau i muri i te wehenga mau tonu tona mahi rite te huānga mahi. Muka (hanganga mo te pūira Pharoah), no te kahore i hanga amitosis, engari kei te wehea tonu te matua, me te putanga o tenei tukanga ko te tohatoha matapōkere o ngā mōhiohio ā-ira. Te kore o te tukanga cytokinetic hua i roto i te uri o ngā pūtau ki e rua karihi, e kore e taea e te tomo ki te huringa angamaheni o whāū i te heke mai. Ka taea e maha aua amitosis arahi ki te hanganga o ngā pūtau ki te plurality o otaota.

Ko te āhuatanga o nāianei

Amitosis rite te ariā timata ki te puta i roto i te maha o ngā pukapuka i roto i nga tau 80 o te rau tau rua tekau. Ki te rā, i reira he whakaaro e nga tukanga katoa i i kopakia ana i mua i raro i tenei ariā, i roto i te meka whakapeaua te hua o te rangahau i runga i ngā kiriata rite ruarua. Scientists whakapono e te āhuatanga o te wehenga pūtau, tahi e te whakangaromanga o te mua, i taea e arahi ki te taua i matau hē a tikanga nga raraunga. Heoi, e kore e taea te pēnei etahi o nga tukanga o te wehenga i roto i ngā pūtau eukaryotic ki whāū ranei pūira. He tauira a Tūrongo, o tenei ko te haamauraa me tukanga wehenga macronuclear (ciliates karihi pūtau, te rahi nui), i roto i nei etahi pūira Pharoah wahi ko ahakoa te meka i hanga e te pou muka te ki wehe.

He aha te mea e tika ana ki te pōauautanga o te tukanga ako amitosis? Ko te take i he uaua tenei āhuatanga ki te whakatau i runga i ona āhuatanga morphological. Ko hārakiraki te faaotiraa taua. Ngoikore ki te āta tāutu i te tohu amitosis tukanga Morphology i runga i te meka e kore katoa hope karihi ko te tohu o te amitosis. A ara dumbbell ona āhua, kei te mārama i whakahuatia i roto i te karihi, ka taea e anake ana ki te momo awhiowhio. Hoki kia constriction karihi he hua o te tītohunga kino mua wehenga i te whāū pūira. Nuinga o ngā wā puta reira i muri tonu amitosis endomitosis (pūira rearua tikanga, kahore wehenga o nga pūtau, me tona karihi). Tikanga amitosis tukanga hua i roto i te tuaruatia ai o te karihi pūtau. Te tāruarua o tenei āhuatanga hanga he plurality o karihi pūtau. Ko te kupu hangaia amitosis pūtau ki pūira whakaturia momo polyploid.

mutunga

Whakarāpopoto, ka taea e tatou te mea i taua amitosis - he tukanga i roto i nei wehea te pūtau ki te momo tika, arā, whakangotangota e wahi i roto i te rua nga wahi. e kore e taea ki te whakarato wehenga pūtau ki rite, ngā haurua ōrite te tukanga iho. E pā ana hoki tēnei ki te kōrero i runga i te whakapapa pūtau.

Tenei tukanga kua he maha o koi rerekētanga i te wehenga wāhanga i te whāū pūira. Ko te rerekētanga matua i roto i te tukanga o te whāū pūira me te amitosis he kahore matua whakangaromanga anga me i amitosis nucleolus, me te rere tukanga waho te hanganga o te muka, te whakarato mōhiohio wehenga. e kore e wehea Cytokinesis i roto i nuinga o te wā.

I tēnei wā, i reira he kahore rangahau o te wā hou, e taea e āta tāutu amitosis rite te ahua o te e hōloa pūtau. Ko te taua pā ki te amitosis perception rite te tikanga o te wehenga pūtau tika ki te aroaro o moni iti rawa o wehewehe i te tinana pūtau katoa. No te mea amitosis pai pea me tuku atu ki ngā tukanga ture e puta ana i roto i te pūtau.