29. 在進化的樹狀圖上, 一點分叉點代表_ , 而一支分叉線停止代表_ 。
(A) a single species, incomplete data on lineage
(B) a single species, a time of extinction
(C) a time of divergence, extinction
(D) a time of divergence, speciation complete

1. 題目解析這道題目在考查進化樹（或...