Aya meteorite ane zvese zvekuvaka zveDNA

Masayendisiti akawana kuti meteorite matatu ane makemikari ekuvaka eDNA uye imwe yayo RNA. Chikamu chezvikamu zvekuvaka izvi zvakambowanikwa mumameteorites, asi chakasara chemuunganidzwa chaive chisipo pamatombo emuchadenga - kusvika zvino.

Aya meteorite ane zvese zvekuvaka zveDNA 1
Masayendisiti akawana zvivakwa zvekuvaka zveDNA neRNA mune akati wandei meteorites, kusanganisira iyo Murchison meteorite. © Mufananidzo Chikwereti: Wikimedia Commons

Maererano nevatsvakurudzi, kuwanikwa kutsva kunotsigira pfungwa yokuti makore mabhiriyoni mana apfuura, kubhomba kwema meteorites kunogona kunge kwakapa makemikari anodiwa kuti atange kuumbwa kwehupenyu hwekutanga paNyika.

Zvisinei, haasi munhu wose anotenda kuti zvikamu zvose zveDNA zvichangobva kuwanikwa zvinobva kune dzimwe nyika; asi, vamwe vangave vakapedzisira vava meteorites mushure mokunge matombo asvika paNyika, maererano naMichael Callahan, nyanzvi yemakemikari, astrobiologist, uye purofesa wepaBoise State University uyo akanga asina kubatanidzwa mukudzidza. "Dzidzo dzekuwedzera dzinodiwa" kubvisa mukana uyu, Callahan akaudza Live Live Science mune email.

Tichifunga kuti zvese zvakasanganiswa zvakabva muchadenga, chimwe chikamu chezvivakwa zvekuvaka kirasi yemakomponi inozivikanwa se - pyrimidines yakaonekwa mu "yakanyanya kuderera concentrations" mumameteorites, akawedzera. Kuwana uku kunoratidza kuti mamorekuru ekutanga epasirese haana kubuda nekuda kwekuwanda kwezvikamu zveDNA kubva muchadenga asi nekuda kwemaitiro e geochemical arikuitika pakutanga kwePasi, akawedzera.

Parizvino, zvakadaro, "zvakaoma kutaura" kuti ndeapi huwandu hweDNA yekuvaka zvidhinha meteorite yaizoda kuve nekubatsira mukubuda kwehupenyu paPasi, sekureva kwaJim Cleaves, nyanzvi yezve geochemist uye purezidhendi weInternational Society for the. Chidzidzo cheMavambo eHupenyu uyo ​​asina kubatanidzwa muchidzidzo. Nyaya iyi ichiri kuongororwa.