玉米是一种雌雄同株的植物通常其顶部开雄花下部开雌花.在一个育种实验中选取ab两棵植株进行了如图所示的三组实验.据图回答有关问题1 Template




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tomski玉米是一种雌雄同株的植物通常其顶部开雄花下部开雌花.在一个育种实验中选取ab两棵植株进行了如图所示的三组实验.据图回答有关问题1 coloring