Muhiimadda noolaha maytosis

Muhiimadda noolaha maytosis waa mid aad u sarreeya. Neposveschennomu xitaa ay adag tahay in la damacsan doorka ciyaaray nolosha habka fudud ee horyaalka heerka unugyada jidhka. Awoodda unugyada si ay ula wadaagaan - taasi waa waxa ugu muhiimsan ee ay u shaqeeyaan, dahsoon ee. Tan la'aanteed waa sii aan macquul ahayn nolosha on Earth, sii kordhaya tirada dadka ee noolaha hal-unuglaha ma horumarin karaan, iyo jiritaanka sii shaqeeyo multicellular waaweyn, waa wax aan macquul aheyn sida dhalmo galmada iyada oo loo marayo horumarinta nolosha cusub iyo ukun ah bacarimisani.

Muhiimadda noolaha maytosis noqon lahaayeen kuwa aad u yar, haddii qeybinta unug ma ahayn nuxurka inta badan ka dhacaya caalamka bayoolajiga our. geedi socodka waxa uu ka dhacayaa dhowr marxaladood. Mid kasta oo iyaga ka mid ah waxaa ka mid ah falal dhowr ah gudahood gacanta. Natiijada tani waa isku dhufasho khasab ah ee ku saleysan hidaha ee cell hal qeybtii by laban laabmay DNA si danbe dhashay cell waalidka laba gabadh.

nolosha oo dhan gacanta lagu soo gabagabeeyey karaa in muddada u dhaxaysa formation of hoosaad ah si ay horyaalka heerka ku xiga laba. muddo Tani waa bayoolaji loo yaqaan "wareegga cell".

Wejiga ugu horeysay maytosis - diyaarinta sax ah, waayo, kala qeybinta unugyada. Period kaas oo unugyada waxaa ka fadilnaa kernels qabtaan diyaarinta toos ah ku tahay horyaalka, wuxuu u yeedhay interphase. Waxaa dhacaya oo dhan ugu muhiimsan - kuwaas oo, la labanlaabay of qaybood DNA iyo dhismayaasha kale, iyo sidoo kale ereygu wuxuu ahaa ee xaddi badan oo protein. Sayidka, koromosoomyada gacanta yihiin labanlaab, oo badh kastaba kan ee koromosoom a double loo yaqaan "chromatid".

Ka dib markii si toos ah interphase bilaabaa habka Qaybta - maytosis. Wuxuu, sidoo kale, meel dhowr marxaladood. Sidaas darteed, dhammaan Laab fidiyey symmetrically in qafis, si ay ka dib markii formation of Risaalo dhexe ee unug kasta oo cusub la sameeyay tiro la mid ah qaybaha haray.

Marxaladaha maytosis iyo meiosis la mid yihiin, laakiin in dambaysta ah (qeybi unugyada jeermiska) waxay leedahay laba kala qaybsanaanta, iyo in dhamaadka waxaa soo baxday ma laba, laakiin afar kletki "gabadhiisa." Sidoo kale, ka hor inta labanlaabay koromosoom offline heerka labaad, si ay set badh ayaa weli ku jira unugyada gabadhii.

1. Prophase. Marxaladan, unugyada centrioles yihiin kuwo aad u arki karo. Iyagu waxay keliyahoo ku sugan gacanta xayawaanka iyo bini'aadanka yihiin. Dhirta aadan haysan centrioles.
2. prometaphase. Halkaa marka ay marayso waxa uu dhamaado prophase iyo metaphase bilaabmaa.
3. Metaphase. Halkaa marka ay marayso, koromosoomyada jiifsan on the "dhulbaraha" ee gacanta.
4. Anaphase. Koromosomis tago in ay ulaha kala duwan.
5. Telophase. Mid ka mid ah unugyada-ka "hooyo" waxaa loo qaybiyaa by formation of xijaab dhexe laba kletki "gabadhiisa." Sayidka ayaa dhameystiraya qeybinta unug ama maytosis.

The muhiimadda ugu muhiimsan noolaha maytosis - waa dhab qeybinta isku mid ah koromosoomyada labalaabka galay 2 qaybood loo siman yahay iyo xijineyso laba kletki "gabadhiisa." Noocyada kala duwan ee unugyada iyo unugyada kala duwan waxay leeyihiin muddo ah ka bilowda qeybinta mar - maytosis, laakiin celcelis ahaan ay ku qaadato ku saabsan mid ka mid saacadood iyo badh. Waxaa jira arimo badan oo raadaynaya this habka aad u jilicsan. Qof kasta oo la beddelo xaaladaha deegaanka, tus, Heerkulka, hab wajiga light, cadaadiska gudaha deegaanka iyo u shaqeeyo iyo unugyada iyo sidoo kale qodobo kale oo badan oo si weyn u saamayn ku yeelan kara labada duration iyo tayada geeddi-socodka kala qeybinta unugyada. Sidoo kale, muddada maytosis iyo dhammaan marxaladaha shaqsi ay noqon kartaa si toos ah ay ku xidhan tahay nooca nudaha, ee unugyada oo uu soo baxa.

Muhiimadda noolaha maytosis la helay kasta oo cusub oo duurka ku ah Cytology noqonayaa mid ka sii qiimo leh, sababtoo ah iyada oo aan nidaamka this nolosha caalamka ma noqon karo.