As his book title made clear, the question of the origin of species was the great riddle Darwin hoped to solve, not the origin of individuality. 正如达尔文自己的著作的标题所清楚显示出来的,他所希望能够解决的问题,其实是物种起源这个大谜题,而不是个体的起源问题。
Many plant species have been derived originally from allopolyploidy, e.g. cultivated wheat. 许多植物物种起源于异源多倍现象,例如培养的小麦。