Xa nto ixhomekeke kuthi: esithathwini-ezimbini zonke iimeko umhlaza zibangelwa ukuguquka random

New yesayensi uphando neqela izazinzulu ukusuka Centre of umhlaza Johns Hopkins ibonisa ukuba i-66 pesenti zonke ukuziguqula ebangela umhlaza isiphumo ngqo iimpazamo DNA random ukuphindaphindeka. Ngelishwa, oku kuthetha ukuba loo kwiDNA kukho ukungavisisani kwaye akakwazi ukuthintela thina kuzo.

iziphumo zophononongo

Esi sigqibo okuphawuleka zisekelwe kuthotho imifuziselo zezibalo ingasetyenziswa ukuqikelela i-DNA ukukhuphela iindlela, kunye nohlahlelo iseti pre-ekhoyo data malunga somhlaza. Ezi ukuziguqula kwenzeka kungakhathaliseki nokuba ngaba loo mntu usempilweni ngokwasemzimbeni okanye hayi, nokuba utyekelo icuba okanye utywala, njalo-njalo. nesimo sempilo, kubonakala nganto.

"Siye wafunda ubudlelwane phakathi inani kwisahlulo stem cell yesiqhelo kunye nophuhliso umngcipheko zomhlaza 17 kumazwe 69 ehlabathini lonke - abaphandi ubhale kwiphepha labo. - I-data wabonisa unxulumano olumandla phakathi kweziganeko umhlaza kunye nokwahlula stem cell eqhelekileyo ngabantu abahlala kumazwe ahlukeneyo, kungakhathaliseki ukuba medium ".

Kuye kwafunyaniswa ukuba ama-29% abantu imihlaza zibangelwa ngeemeko zokusingqongileyo. Kuphela-5% amatyala lomhlaza kubonakala ukuba ilifa.

iziphetho ezifanayo

Ezi ziphumo ziyangqinelana izigqibo ekufikelelwe abaphandi ngo-2015: ezininzi imihlaza kubangelwa "amashwa" kunokuba nayiphi eminye imibandela. Ngelo xesha, iziphumo zophando bangaphambili kuvuswa eninzi impikiswano, yaye lo msebenzi omtsha kungenzeka ukuba bajongene emoyeni efanayo ezikhohlakeleyo.

Yintoni esiyaziyo umhlaza

Ngenxa yoku, kubalulekile ukuba igxininiswe into ezinye iinkcukacha ezibalulekileyo. Umhlaza sisifo entsonkothileyo kakhulu. Kukho ubuncinane 200 eentlobo zayo, yaye ngamnye kubo abe ndlongondlongo nokuba kuyabulala, nangona kwezinye iimeko ukuze zinongezele unyango, yaye nokuba baphiliswe. Kwakhona, kukho iindlela ezininzi yokujongana ngumhlaza, ukusuka zemveli kubantu. Ezinye zazo ngempumelelo ngakumbi kunezinye.

Eyona nto ibalulekileyo ukuqonda malunga oku: thina asazi kakhulu malunga nesi sifo. Umhlaza kunokubangelwa zombini yi eziliqela engentle yokusingqongileyo (radiation, carcinogens kunye nezifo) kunye oonobangela yemfuza, yaye ezinye zazo kusenokwenzeka ukuba nempembelelo ngaphezu kwabanye.

Ngokutsho izazinzulu, abangazange inxaxheba kuphononongo

Uphando entsha yenza sicinge oko sinako lula uhlobo random kohlo- umhlaza DNA yethu, kwaye oku kudala eziliqela iingxaki.

Nangona data bubonisa ukuba imali kwezo umhlaza random liphezulu kakhulu, inani ngqo ibe ngaphantsi kakhulu. Eneneni, abanye abaphandi abaninzi bakholelwa ukuba unxulumano phakathi iimpazamo umhlaza kunye DNA phindana, nto leyo ibonisa isifundo yangoku lowo kwenzeka ngo-2015, ababhali lukhulu kakhulu. Abanye baphawula ukuba ababhali zezi zifundo bathembele kakhulu kwi iseti nje omnye data, kanti kufuneka ithathelwe ingqalelo kunye nabanye.

Esinye isifundo kalindixesha Nature umva ngo-2016, waba kwisigqibo esahlukileyo. Ababhali ngelithi ukuba izinto zemvelo unobangela womhlaza ezininzi. Ngenxa yoko, kuye kucace ukuba kufuneka kwi inyaniso tirhisa uphando okuninzi.

Ukubaluleka isigulo kwangethuba

Enoba kunjalo, oko akuthethi akuthethi ukuba awukwazi ubuncinane kancinane ukulawula iintlobo ezininzi zomhlaza. Nokuba umntu akanayo unethamsanqa ngokwenene yaye wavuka somhlaza ngenxa izakhi random, kusenokwenzeka ukuba baphile kunanini na indawo embalini yoluntu, ngenxa yomsebenzi okukhulu iinzulu lwazi nabafundi zonyango ehlabathini lonke.

Enyanisweni, ababhali zithi, ukuba iziphumo zichanile, bona kwakhona ukubonisa ukubaluleka ekufumanekeni iimpawu somhlaza usaqala.

"Uhlalutyo lwethu ligxininisa ukubaluleka ukubhaqwa ngoncedo ukunciphisa ukufa evela zomhlaza ezininzi ezinxulumene izakhi random" - bebhala.

Indlela ukunciphisa ingozi yomhlaza

Umngcipheko iyonke umhlaza nesifo kungancitshiswa ngama- ukuzilolonga, izithintelo ukuselwa kotywala, ukutya okunempilo ukuyeka ukutshaya. Enyanisweni, uphando lwakutsha nje bagqiba ukuba izinga lokusweleka ngenxa yomhlaza eUnited States inokuncitshiswa ngesiqingatha, ukuba bonke abantu abadala American kuya ngqo kwezi ngcebiso.

Ngoko musani ukuphakuzela kwaye musa ukukholwa zamaphephandaba ezithandwayo. Phila ubomi obunempilo inxaxheba nothando kuphando umhlaza. Enoba yintoni ebangela umhlaza - yemfuza ilifa, yokuphila okanye random iimpazamo DNA phindana, okukhona siya kwazi ngale sifo, yaxhobisa ngcono ukulwa nayo.