Taranka - labanlaabmayso: cell ka gacanta

Laban laabmay formation of laba koobi isku - arrin iska caadi ah in nidaamka noolaha. Inta badan labanlaabka waxaa lagu magacaabaa taranka. The dambe dhici karaan heerarka kala duwan ee ururka ee arrinta - si toos ah uga DNA si koromosoomyada iyo unugyada dhan. Isla mar ahaantaana, haddii hab-sami ah, helay laba cutub isku mid. Taranka - labanlaabka ah ee dahabka ee hadda.

Sidee dhab ah meel

The ugu xiisaha badan oo saldhig u ah dhammaan noocyada kale waxaa loo arkaa inay taranka DNA. Waa habka ah in meel in ka badan dhowr marxaladood, kuwaasoo mid walba uu sax yahay muhiim, sababtoo ah yaqiin ka kiciyaan ereygu wuxuu ahaa ee protein gabi ahaanba khaldan ku haboonayn in la isticmaalo in cell iyo u shaqeeyo oo dhan.

Bar bilaw The

Taranka bilaabataa DNA laban laabmay cell, taas oo uu leeyahay natiijo ee laban laabmay koromosoomyada. Laakiin taranka - waa saldhig u ah geeddi-socodka oo dhan. Waxay ka kooban tahay saddex marxaladood: marka hore, bilow ah, marka labaadna, muruqa, iyo markii saddexaadna qaar, joojinta. shaqada wuxuu ku bilaabmaa enzyme qodobada muhiimka ah - replicators oo kaliya iyaga la. Laga bilaabo meel khaldan u xumeeyaan lahaa geeddi-socodka oo dhan. The enzyme-Hannaan shidaa borotiinada gaar ah u sameeyaan adag pre-taranka ee looga baahan yahay labanlaabay DNA. Ka hor inta dhufashada ee DNA waa la gooyay laba qaybood by ensaymes gaar ah.

Silsilada kaabaha

Marka muruqa ku furta oo la dhisay silsilad waalidka kaabaha. Taasi waa, mid ka dibna sameysmi karaa Britain dhamaystiran. Geedi socodka dhammaanaysaa joojinta in sidoo kale dhacda in hal dhibic qaarkood. Waxaa jira unug khaas ah - replicon ah. Tani waa jab DNA in kor u dhistaa muddo ah. taranka DNA - aasaaska, waxa aan aan laga hirgalin karo koromosoomyada. Arintaan waxay dhacdaa marka gacanta isku diyaarinayo inuu kala qaybiyaan.

Protein sida calaamad

Waxaa bilaabmaa labanlaabay koromosoom dhowr saacadood ka dib markii ay dhacday labanlaabay DNA gudahood. Dib u dhiska koromosoomyada ah, waxaan u baahan nahay nooc cusub ma aha oo kaliya ee deoxyribonucleic acid, laakiin sidoo kale borotiinada in ay yihiin qayb ka mid ah hay'adaha koromosoomyada ah, iyo Avv u baahan yahay waqti. taranka Fast - calaamad ka mid ah kansarka. Haddii ay ogaadaa protein aad u badan, dabeecad xoogan qeybinta unug, dhakhtarka bilaabo inuu qaylodhaan.

meel ku filan

Waxaa jira geeddi-socodka ah ee taranka waa feature weyn - in meel bannaan oo yaruna eego Avv DNA cusub waxaa si caddaalad siman, sidaa darteed waxaa jirta dhalanrog lahayn, taas oo keeni kara gardarro saamayn labada dhinac. dhibco badan ilaa xad, sida caadiga ah badh ilaa laba darsin.

Sidee dhab ah loo soo abaabulay doonaa koromosoomyada waxay ku xiran tahay dhacaya maytosis cell ama meiosis. Xaaladda hore, gacanta ka dhalanaya noqon lahayd set caadiga ah, ee labaad - nus. Ka dib oo dhan, badhkoodii kalena keeni doonaa gacanta lammaanaha labaad ee dhalmo galmada. Haddii in meiosis si lama filaan ah aad u hesho a set dhamaystiran, gamete ama noqon karin, ama Doono rimidda ee ilmaha jirran. Si kastaba ha ahaatee, carruurta, kuwaas oo weli inta badan ku dhashay, waxaa jira dhicin hore ee uurka, hooyadu kuwaas oo qaadan kartaa in ka badan ugxan samaynta ee billaha ama dhiig dhexe ee wareegga.