Anthu omwe ali ndi ubweya wofiira akhoza kukhala motalika kwambiri ngati ataphunzira zoona za majini awo ...
Anthu ali ndi lingaliro la achinyamata osatha, koma mpaka pano silingatheke kupeza chifukwa chake pa msinkhu womwewo anthu onse amawoneka mosiyana. Nthawi zambiri, maonekedwe aunyamata ndi thanzi labwino mu zaka 50 mpaka 60 amafotokozedwa ndi kugona kwapamwamba komanso zakudya zabwino, koma izi si zoona. Pali zitsanzo zambiri zomwe anthu omwe ali ndi zizoloŵezi zovulaza ndi ndondomeko yaikulu yogwira ntchito amakhala zowonjezera. Ndiye chinsinsi cha unyamata ndiye chiani? Asayansi apeza yankho la funso ili: ndilo mumtundu wotchedwa "wofiira".
Kodi "jini wofiira" ndi chiyani?
Kupita patsogolo kumvetsa chifukwa chake anthu ena amatha kuyang'ana njira yonse ngakhale atakalamba, asayansi apindula mwa kuphunzira DNA ya anthu. Mu chibadwa cha munthu aliyense, jini ya MC1R imayikidwa, yomwe imayenera kuteteza thupi ku mazira a ultraviolet. Awa ndi ma radiation omwe amachititsa munthu kukalamba kwa khungu: mawonekedwe a makwinya, owuma komanso mawanga. MC1R imachepetsa kuvulaza kwa epidermis, kotero kusintha kwa khungu kunja kumapezeka mwa anthu pafupi ndi 50, osati zaka 10. Kupeza kodabwitsa kwa jini ili ndi asayansi ku yunivesite ya Erasmus ku Netherlands.
Monga mbali ya phunziro lawo, madokotala anatenga DNA kuyesa anthu 2,693 komanso ankaonetsetsa kuti khungu lawo likuyesa kuti aone ngati akuwoneka ngati wamng'ono. Mu mndandanda wa majini a omwe khungu lawo silinkafuna kumvera malamulo a ukalamba wachilengedwe, ndipo MC1R inapezeka. Jini lomwelo ndilo la mtundu wa tsitsi lofiira - ndicho chifukwa chake amatchedwa "jini wofiira".
Kodi achinyamata amadalira bwanji maonekedwe a mtundu?
Kodi izi zikutanthauza kuti anthu omwe ali ndi ubweya wofiira amakhala ndi maonekedwe abwino kuposa anzawo? Ndithudi, inde. Matenda a khungu lawo kwa zaka ziwiri "lags" mu ukalamba wochokera kumdima wandiweyani ndi blondes. Zitatero, oimira a yunivesite adasankha kupitiliza kufufuza kuti adziwe kuti kudzakalamba kwa anthu omwe ali ndi tsitsi ndi khungu lopanda banga.
Pulofesa Ian Jackson adatha kutsimikizira kuti anthu omwe ali ndi tsitsi loyera komanso tsitsi loyera adzawoneka bwino mu ukalamba kuposa ma brunettes amdima. Ayeneranso kukhala ndi maso a buluu, imvi kapena obiriwira kuti agwirizane ndi mtundu wa "wotumbululuka". Akatswiri a sayansi ya sayansi amatchedwa "kuyesera zaka zooneka bwino."
Ian akuti:
"Chinthu chotsatira ndicho kulengedwa kwa chinthu chomwe chikanatsegula jini iyi kwa aliyense, koma panopa chidziwitso chimenechi sichipezeka kwa ife."
Ochita kafukufuku samatha kumvetsetsa zomwe zimachitika pamtundu wa MC1R komanso "kuzipatula" kuchokera kumtundu wofanana wa majini. Koma iwo ali otsimikiza kuti posachedwa iwo adzatha kupanga mankhwala, pambuyo pake aliyense adzawoneka wamng'ono ndi wokongola.