Powered by Guardian.co.ukLesi sihloko osesikhundleni “Ingabe intsha babe isidoda zofuzo buthaka?” kwalotshwa Hannah Devlin, isayensi imibiko, for theguardian.com ngoLwesithathu 18th February 2015 06.01 UTC

Abafanyana kakade nenala sikhathazeke: amabala, girls nobukhulu 'into' yabo, njengoba Adrian Mole okungenzeka akubeka. Ingabe inkinga kokuba zofuzo buthaka isidoda ijongosi kudingeka ngempela ukuba kulolu hlu?

Ososayensi at the University of Cambridge baye basikisela lokhu kunjalo emva ekufezeni isifundo ehilela ngaphezu 24,000 Abazali nezingane zabo. The okugxilile on amancane umehluko zofuzo phakathi kwabazali nabantwana, okuyinto okuthathwa kubangelwa amaphutha ukukopishela in the iqanda noma isidoda cells.

Ucwaningo lubonisa ukuthi, ngokwesilinganiso, Obaba kudlule izikhathi okungenani eziyisithupha njengoba abaningi balaba ezishintshwe izakhi izingane zabo njengoba omama. Lokhu kusikisela isidoda DNA a igceke kancane abathembekile ukulandelana kababa zofuzo, Cishe ngenxa yokuthi isidoda cells eziye zabhekana uqhekeko ukwedlula female iqanda by the time umcabango kwenzeka.

The claim more yesiteleka - futhi lowo bambheka iningi - wukuthi rate iphutha amaseli isidoda yintsha imayelana 30% kunakunoma izinsizwa.

Abacwaningi bathi lokhu wakwazi ukuchaza ukuthi kungani abantwana obaba kwentsha abe nengozi ezibangela ezifana autism, bayasangana spina bifida.

Author iphepha, Peter Forster, wathi: "Izingane abafana oneminyaka engu-15 ubudala mayelana 30% ukuguquka kwezakhi zofuzo ngaphezu abantwana izinsizwa. Kuyinto a distribution J emise. "

Cishe lokhu kuhunyushwa ingozi kwasekuzalweni mayelana 2% for abafana abasakhula, kuqhathaniswa i ingozi isilinganiso of 1.5%, uthe.

Forster wathi: "Kungaba ukuthi lonke uhlelo ukukhiqizwa kwesidoda isiphambeko athambekele ekuqaleni ... ukuthi akusikho nje ubuhle okwamanje."

Wathi ukuthi theory yayize utshelwa umqondo, ngomunye intatheli, ukuthi uma abafana kwentsha masturbated more, babengase bakwazi ukusebenza ngendlela yabo ngokusebenzisa le "routing" period ngokushesha kakhudlwana.

Ngaphambi intsha abalalela lokhu kusikisela (bengafuni kakade nikela impela esiningi kulo msebenzi?), kuyakufanelekela ebuka iphepha uqobo, in the Royal Society Journal Okuqhutshwa B.

Into uyinqaba iyona ukungabikho ngokuphelele ijika J emise. Lapha kusuke igrafu, olubheka like a line ngqo kimi.

Germline STR kwezakhi rates for obaba nomama
Germline STR kwezakhi rates for obaba nomama. Photograph: Ukuhamba of the Royal Society

 

Kuyiqiniso ukuthi iphuzu idatha for abafana abeve eshumini nambili bangase ukukhombisa inombolo ethe xaxa yezinguquko kunaleyo for the 20- nonyaka-30 ubudala range, kodwa namanje ibonakala abaphila ne 95% Ukuzethemba isikhawu mkhuba eqondile. Angikwazi ukubona yisiphi isizathu ukuphetha ngokuthi 'amangqamuzana lwegciwane abafana intsha okwehlukile the rule yokuguga ", njengoba abalobi do.

Uma ukuya phansi ukuthi umzila, nani bangase bazibuze ukuthi kungani isidoda iya kancane dodgy at 30, kodwa ke uyalulama uphinde kusondela yobudala emaphakathi, ngoba kubonakala sengathi a spike in the 30-35 isigaba. Incazelo okulula wukuthi idatha nje kancane enomsindo.

Allan Pacey, uprofesa andrology at the University of Sheffield, uyavuma: "Lokhu akwenzi mqondo kimi. Angiboni ubuhlobo J emise futhi, ngokoMthetho biology, Angikwazi ukucabanga noma yini ukukuchaza. "

Forster ukhomba izifundo labantu eziningana, okuyinto isu ukuthi obaba abeve eshumini nambili bangase bathambekele kakhudlwana ukuba izingane nokuphazamiseka kwempilo. Kodwa kunzima ukusho ukuthi imiphumela enjalo ahlobene zofuzo ngqo noma izici zezenhlalo nezemvelo. Kwami, lokhu studydoes zakamuva lutho olutheni ukuze ixazulule le nkinga. Njengoba Pacey ikubeka: "I cha bheka phi ukukhathazeka okukhulu obaba kwentsha."

Futhi kulabo Abafanyana abangakhulelwe obaba, mhlawumbe kukhona nezinye izizathu ukulinda kuze 20s zabo ukuba iqale ubaba.

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