Puzzle: Suppose four source species have the traits AB, DH, EF and CG, and the derived species have traits BEF, DEF, ADE, ACD, ACF, ADG, BEG and FGH.
英
美
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進(jìn)階題:假設有四個(gè)根源物種,性狀分別為AB,DH,EF,CG,八個(gè)衍生物種的性狀為BEF,DEF,ADE,ACD,ACF,ADG,BEG與FGH。
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