一个拥有单一共同祖先且允许物种间部分基因彼此交换的模式甚至更优于树形生命模式。
A model that had a single common ancestor and allowed for some gene - swapping among species was even better than a simple tree of life.
结果表明，不同基因型不同叶位层间叶片形态、光合气体交换特征参数存在显著差异。
The results showed that the leaf morphological parameters and gas exchange parameters at different leaf positions were notably different among different genotypes.
PAE突变能在世代间稳定传递，其产生机制可能为等位基因间的不等交换。
PAE is stable over generations and has been suggested to be caused by unequal crossing-over.
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