lb1lb1

野外亞種同亞種交配多的是啦，本來就係同一個種，某啲地理障礙消失左，咪又係返埋一齊羅。
就算唔同種，野外天然混種都好多，i.e 北極熊/灰熊; 長鬚鯨/藍鯨。 混種得到，即係喺冇幾耐之前他們係同一個祖 ...
cheerios 發表於 2010-11-14 00:47

problem is 1 is done by nature, where the change helps the animal to adopt better to the enviornment
while the other is done by human where you would not know if it is beneficial or harmful