若一个群体中某一性状出现的�率增加这很可能是 A.这个性状对环境具有很强的适应性b.该群体中具此性状的纯合体多c.这个性状的出现是由 Template




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tomski若一个群体中某一性状出现的�率增加这很可能是 a.这个性状对环境具有很强的适应性b.该群体中具此性状的纯合体多c.这个性状的出现是由 coloring