UMary Allen
Kutheni izinja zethu zasekhaya zineendlebe ezithobileyo, ngokungafaniyo nezalamane zazo zasendle?
Abaphandi baye bagqiba kwelokuba yayiyimpazamo kwinkqubo yebhayoloji xa izilwanyana zaba mbuna, ibhala iABC News.
Iindlebe ezijingayo ezinenzala eninzi yezinja azifumaneki kwizinja zasendle. Izinja zasekhaya nazo zineempumlo ezimfutshane, amazinyo amancinci, kunye nobuchopho obuncinci. Abaphandi bayibiza ngokuba yi-"domestication syndrome".
Ukutyhubela iminyaka, abaphandi bebeneengcamango ezininzi, kodwa akukho nanye eyamkelwa ngokubanzi. Kwiminyaka yakutshanje, abaphandi baseJamani, eUnited States, eOstriya naseMzantsi Afrika baye bahlolisisa iimbumba zezilwanyana ezinethambo lomqolo. Kuye kwaboniswa ukuba ukuzala okukhethiweyo kunokwenza iiseli ezithile ze-stem zingasebenzi, "ziyalahleka" endleleni eya kwindawo yomzimba apho ziza kuqala ukwakha izicubu (apho zifumaneka kwizilwanyana zasendle). Umzekelo woku kukuphaphazela kweendlebe.
-Ukuba ukhetha ukhetho lokufumana uphawu, uhlala ufumana into engalindelekanga. Kwimeko yezilwanyana zasekhaya, inkoliso ibingayi kuphila endle ukuba ikhululwe, kodwa ekuthinjweni, iqhuba kakuhle. Kwaye nokuba imikhondo ye-Domestication syndrome inesiphene ngokobuchwephesha, ayibonakali ibenzakalise, utshilo uAdam Wilkins kwiZiko leTheory Biology.