QUESTION IMAGE
Question
directions: drag one tile to each box. not all tiles will be used.
the phylogenetic tree below shows the evolutionary relationships among several organisms
arrange three organisms in the correct order to show the phylogenetic history of a chicken
Step1: 确定进化起点
进化树的根基是共同祖先,这里“Early Vertebrate(早期脊椎动物)”是基础。
Step2: 确定中间进化阶段
从进化树看,鸡属于鸟类分支,“Early Bird(早期鸟类)”是鸟类进化中的一个阶段。
Step3: 确定最终物种
题目要求的是鸡的进化史,最终物种就是“Chicken(鸡)”。
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Early Vertebrate → Early Bird → Chicken