Ininzi yezinja zasendulo yafunwa liqela lezenzululwazi zaseSweden ezikhokelwa nguPetra Savolainen, uprofesa weSebe leZoolo kwi-Royal Institute of Technology yaseStockholm.
Amanyathelo okuqala okufunda
Ukufumana ulwazi olunokwethenjelwa ngo-2004, i-DNA ye-mitochondrial (ifa elivela kwinqanaba lesetyhini) lezinja zanamhlanje kunye neentaba zabo zasendle zafaniswa. Njengomphumo wedatha efunyenweyo, ukufana okukhulu neengcuka kwi-DNA isakhiwo kubonakaliswe kwiintlobo ezili-14 zeenja.
Imifuno yasendulo ihamba ekuphuhlisweni kuvela kokhokho babo iminyaka emininzi. Ukufunyanwa kwezinto zakudala zezinto zakudala zeenja ezifuywayo kwimiba engama-15 000 ubudala. Nangona kunjalo, ezinye izazi ze-biologists zikholelwa ukuba imfuyo yamandulo yeenja ezahlukana nengcuka ngaphambili.
Usosayensi uRobert Wayne ukholelwa ukuba ukubonakala kwintlobo yasekhaya kwenzeka kwangaphambili kunokubeka indlela yokuphila yabantu (malunga nama-10 000 ukuya kuma-14,000 kwiminyaka edlulileyo). Ngaphambili, izazinzulu zazikholelwa ukuba abantu bokuqala abazange baqale izifuyo. Nangona kunjalo, ngokukaRobert Wayne, izinja zokuqala zavela eminyakeni eyi-100 000 edlulileyo okanye ngaphambili.
Iingcali ezininzi zenzululwazi zikholelwa ukuba inja enkulu kakhulu yakudala yavela eMpuma Asia. Kwiphando lophando, bekukho apho i-diversity of all kinds is found, ebonakalayo iphantsi kweminye imimandla nakwiizwekazi.
Izinja zakudala
- Akita Inu (Japan)
- I-Alaskan Malamute (iAlaska)
- I-Afghan Greyhound (Afghanistan)
- Basenji (Congo)
- Lhasa (Tibet)
- Pikenes (iChina)
- ISaluki (iCrescent Crescent eMiddle East)
- Samoyed Dog (eSiberia, eRashiya)
- Shiba Inu (Japan)
- I-Husky yaseSiberia (iSiberia, iRashiya)
- ITibetan Terrier (Tibet)
- UChow Chow (waseTshayina)
- Sharpei (iChina)
- Shih Tzu (Tibet, China)
Nangona kunjalo, impendulo yokugqibela yombuzo, leyo inja yinto endala kakhulu, inokufumaneka xa zonke iintlobo zanamuhla zihlolwa.