Izazinzulu ziye zafumanisa ukuba ii<em>meteorite ezintathu zinemichiza yokwakha iDNA neqabane layo iRNA. Iseti engaphantsi kwezi nxalenye zesakhiwo sele ifunyenwe kwi-meteorites, kodwa intsalela yoqokelelo ibingekho ngokumangalisayo kumatye asesibhakabhakeni - kude kube ngoku.
Ngokutsho kwabaphandi, ukufunyanwa okutsha kuxhasa ingcamango yokuba kwiminyaka eebhiliyoni ezine edlulileyo, ibhombu ye-meteorites inokuthi ibonelele ngeekhemikhali ezifunekayo ukukhaba-ukuqalisa ukubunjwa kobomi bokuqala emhlabeni.
Noko ke, asingabo bonke abantu abakholelwa ukuba onke amacandelo eDNA asandul’ ukufunyanwa avela kwamanye amazwe; kunokuba, abanye kusenokwenzeka ukuba baye baphela meteorites emva kokuba amatye awela eMhlabeni, ngokutsho Michael Callahan, ikhemisti analytical, ngeenkwenkwezi, kunye nonjingalwazi onxulumene Boise State University owayengabandakanyekanga kuphononongo. "Izifundo ezongezelelweyo ziyafuneka" ukukhupha oku kunokwenzeka, uCallahan uxelele Sayensi ephilayo nge-imeyile.
Ukucinga ukuba zonke iikhompawundi ziye zavela kwindawo, enye i-subset yeebhloko zokwakha iklasi ye-compounds eyaziwa ngokuba yi-pyrimidines ibonakala "kwimilinganiselo ephantsi kakhulu" kwiimeteorites, wongezelela. Oku kufunyanisiweyo kubonisa ukuba iimolekyuli zokuqala zemfuzo zehlabathi azizange zibekho ngenxa yokuthontelana kwamalungu e-DNA avela esithubeni kodwa ngenxa yenkqubo ye-geochemical eyenzeka kuMhlaba wokuqala, wongeze watsho.
Okwangoku, nangona kunjalo, "kunzima ukuthetha" ukuba yeyiphi ingxinano ye-DNA yokwakha iibhloko zeemeteorite eziya kufuneka ziqulathe ukunceda ukuvela kobomi eMhlabeni, ngokutsho kukaJim Cleaves, i-geochemist kunye nomongameli we-International Society for the Isifundo seMvelaphi yoBomi obengabandakanyekanga kwesi sifundo. Lo mba usajongwa.
