Pfupisa nyaya yacho:  Munguva yazvino uno yokuongorora DNA, mapurisa anowanzokwanisa kuziva munhu anenge achifungidzirwa nebvudzi rimwe chete kana kuti donhwe duku reropa. Zvisinei, unyanzvi hwavo hunokundikana kana anenge achifungidzirwa aine mapatya. Mapatya akafanana anogoverana 100 muzana yemageneti awo, zvichireva kuti kusvikira zvino zvave zvisingabviri kuziva kuti muenzaniso unobva kumunun'una upi. Asi chinetso chacho chakagadziriswa nechikwata chevanzveri vokuBritain. Vanotsvakurudza paYunivhesiti yeHuddersfield vakagadzira nzira yavanoti inogona kusiyanisa pakati peminwe yeminwe yemagene emapatya akafanana. Kufambira mberi kwacho kunogona kubvisa chipingamupinyi icho kazhinji kazhinji chaireva kuti kwakanga kusingabviri kuziva kuti ndiani aiva nemhosva yechitsotsi. Mapatya akafanana anotanga upenyu nemajini akafanana nemhaka yokuti anobva muzai rakabereka iro rinokamukana kuva mazai maviri. Asi pavanokwegura, zvinhu zvakasiyana-siyana zvavanosangana nazvo muupenyu, zvakadai sokusvuta kana kuti kudya, zvinokonzera kusiyana-siyana kwenhamba yehydrogen bonds iri muDNA. Vachishandisa nzira inonzi high resolution melt curve analysis - kana kuti HRMA - vaongorori vava kukwanisa kuziva musiyano uri pakati pemapatya acho. HRMA inoita kuti DNA iite tembiricha yakanyanya kukwirira kusvikira zvisungo zvehydrogen zvaparara, inonzi tembiricha inonyunguduka. Kana DNA iine zvisungo zvakawanda zvehydrogen, ndipo panonyanyokwira tembiricha inodiwa kuti inyungudike. Muna 2013, mapatya ane makore 22 okuberekwa Mohammed naAftab Asghar vose vakapomerwa mhosva yokubata chibharo mukadzi ane makore 17 okuberekwa muBerkshire nokuti mapurisa akanga asina chokwadi kuti humwe uchapupu hweDNA hwakabva kupi. Mohammed pakupedzisira akawanwa ane mhaka nedare ravatongi paReading Crown Court, uye mhosva dzaipomerwa Aftab dzakadonhedzwa nemhaka yokuti uchapupu hwomunharembozha hwakamuisa kune imwe nzvimbo. Asi mune zvimwe zviitiko zvakatotungamirira kukudzingwa kwamatare edzimhosva, panzvimbo pokumhanya...
Mapatya akafanana anotanga upenyu nemajini akafanana anobva muzai rakaberekwa rakafanana. Sezvavanokwegura, uwandu hwehydrogen bonds muDNA hunochinja nemhaka yezvakaitika muupenyu zvakasiyana-siyana zvakadai sokusvuta uye zvokudya zvakasiyana-siyana. Kupfurikidza nokupisa DNA kusvikira zvisungo zvaputsika, vanzveri vanogona kuona misiyano iyi. Ikoku kuchabetsera kuziva kuti mapatya api ane mhaka mumhaka yemhosva, somuenzaniso.