Sinadaran da aka gano a ƙashin dinosaur daga Brazil sun sake tayar da tambaya game da jini

Ƙashin ƙafar wani dinosaur daga arewa maso gabashin Brazil na ɗauke da alamun sinadaran abin da ya taɓa ratsa cikinsa. Tawagar Kliti Grice ta Jami'ar Curtin ta ba da shaidar cewa ƙananan siffofi a cikin ƙashin mai yiwuwa ragowar ƙwayoyin jajayen jini ne da ma'adanai suka kiyaye. Wasu masana a wajen tawagar sun yi shakku.

An wallafa binciken a Proceedings of the National Academy of Sciences ranar 2 ga Nuwamba. Dabbar, Aratasaurus museunacionali, ta rayu kimanin shekaru miliyan 115 da suka wuce. An sami burbushinta a wurin haƙar ma'adinai a 2008. Sabon binciken ya shafi abin da ya rage cikin ƙashin, inda ƙananan hanyoyi suka taɓa ɗauke da jijiyoyin jini.

Masu binciken sun nemi shaida iri biyu. Ta hanyar ƙara girman hoto sun ga siffofi irin na ƙwai a cikin hanyoyin kawai. Gwajin sinadaran da aka fitar daga ƙashin ya nuna heme B da abubuwan da suka samu yayin sauyinsa. Heme wani ɓangare ne na haimoglobin da ke taimaka wa ƙwayoyin jajayen jini ɗaukar iskar oxygen. Dutsen da ke kewaye ya nuna wata alama dabam ta sinadaran launi daga halittu masu amfani da haske.

Wurin da aka ga alamun ya sa tawagar ta danganta sakamakon gwaje-gwajen. Ƙarin gwaje-gwaje sun nuna alamun heme a cikin siffofin kansu. An kuma gano wani ma'adinin manganese mai suna hausmannite. Masu binciken sun yi hasashen cewa ma'adanai sun taimaka wajen adana ragowar asalin naman bayan ya binne. Wannan shi ne bayanin da suke ganin zai iya zama dalilin haka.

Ba kowa ya yarda siffofin burbushin ƙwayoyin jini ne ba. Mary Schweitzer, ƙwararriya a nazarin burbushin halittu wadda ba ta shiga aikin ba, ta shaida wa ABC cewa shaidar danganta siffofin da ƙwayoyin jini ba ta gamsar da ita ba. Muhawarar ta shafi irin abin da ya bar alamun. Kama da siffar ƙwaya kaɗai ba zai warware batun ba.

Abin da hakan ke nufi gare ku: hoton ya nuna burbushin ƙafar dabbar. Binciken batun jinin ya dogara ne kan na'urorin da ke iya tantance abin da ya yi ƙanƙanta sosai har ido ba ya iya ganinsa. Tawagar ta gano sinadarai da ma'adanai. Gwajin tsohon DNA bai gano komai ba. Ba a samu samfurin jinin dinosaur mai ruwa ba.