Hudu daga cikin umarni biyar na zamani masu ma'amala kuma babu kasa da uku da zasu kawar da tsuntsaye waɗanda basu iya tashiwa kuma basu rasa ƙubin ƙashi a kirjin su, wanda manyan fikafikan fuka-fikan suna haɗuwa da yawo. Ostriches, kiwi, da emu ana kuma kiran su da jijiyoyi.
Yin hukunci da sakamakon sabon bincike, sun rasa ikon tashi ba saboda wasu maye gurbi a cikin DNA ba, amma saboda canje-canje a cikin tsarin kwayoyin halittu, kuma wannan ya faru sau da yawa yayin tarihin juyin halitta, marubutan ƙungiyar masanin ilimin halitta na Harvard Scott Edwards a cikin wata kasida da aka buga a mujallar Science.
Maye gurbi yana canza tsari da kaddarorin garkuwar kariya, ko ma lalata aikinsu gaba ɗaya. Haka kuma, furotin iri daya na iya aiwatarda ayyuka da yawa a cikin tsokoki da sel, don haka asarar sa galibi yana da matukar hadari. Ta wani bangaren kuma, canje-canje a kan tsari yana sa a sami damar kyakkyawan aiki don "daidaita" aikin kwayar halittar DNA, kwayoyin halitta da sunadarai, tare da ƙaramar barazanar rayuwar kwayoyin gaba ɗaya. Wannan ya faru, ga alama, a cikin magabatan magabatan zamani.
Masana kimiyya 11 halittattun kwayoyin ne suka lalata shi, gami da tsattsauran ra'ayi guda takwas, kuma ana amfani da bayanan DNA da dama marasa tashi da nau'ikan 25 masu tashi. Daga nan sai suka yanke shawarar wuraren da aka samar da halittar DNA na sauran tsuntsayen - an samu adadin sama da dubu 280, kuma gungun 2355 daga cikinsu sun sha bambam a yadda zuriya suke tarawa da sauri a cikin wannadansu, fiye da sauran. Da alama suna da alhakin asarar ikon tashi da duk abin da ya shafi shi.
Masana kimiyya sun nuna cewa kwayar halittar da ke haifar da haɓaka fuka-fuka a cikin kajin kaji da gaske tana "kunnawa" idan kun jingina shi da tsarin sarrafa tsuntsayen tsuntsaye mai tashi. Amma baya aiki tare da wannan tsari mai kama da wannan, wanda aka aro daga jirgin Nanda mai tashi.
A cewar marubutan, duk wannan yana nuni da sauƙin daidaitawa wanda rashi jirgin zai iya faruwa. A bayyane yake, magabatan zuriya sun tsira daga wannan matakin akalla sau uku, kuma wataƙila sau biyar yayin tarihin juyin halitta.
Karatun dabba - mujallar kan layi game da dabbobi
An baiwa ibis jan-kafa mai-kyautar bakin ciki - yana daya daga cikin na farko a cikin jerin tsaran jinsunan.
#animalreader #animals #animal #nature
Karatun dabba - mujallar kan layi game da dabbobi
Mississippi alligator shine mafi girma akan dukkanin ra'ayoyin da ake dasu yanzu guda biyu. Mississippian zauna.
#animalreader #animals #animal #nature
Karatun dabba - mujallar kan layi game da dabbobi
Dipcodles sune abubuwa masu rarrafe a cikin gidan ainihin kekanan. Waɗannan su ne mafi ƙanƙanta na.
#animalreader #animals #animal #nature
Karatun dabba - mujallar kan layi game da dabbobi
Zakin zaki ya dame shi a kan kujerar bene, wani hoton bidiyo da ke bakin tekun ya cinye Intanet
http://animalreader.ru/morskoy-lev-pozagoral-na-shezl ..
Sauran rana wani bidiyo mai ban dariya ya bayyana akan hanyar sadarwa, wanda wani dan Beljiya ne yake yin fim wanda yake kwance a wani wuri a bakin gabar teku.
Karatun dabba - mujallar kan layi game da dabbobi
An yi kuskuren ɗaukar Wolves ba da ƙarfin gaske ba. A zahiri, ƙwararre ne mai wayo. Saboda haka, godiya.
#animalreader #animals #animal #nature
