The Watery Beans just keep broadening!!

My watery beans are steadily growing bigger and stronger. There are six leaves on each of the plants. One is three inches long with loads of tiny roots the other is just over two and a half inches long with just as many roots and beginning to peek over the top of the cup. I too am thinking that it would have been better to put each bean in their own cup to be able to check the variables a bit better. I do still want to dissect one, but as they are growing so well I feel almost too attached to one to kill one. But if it is the name of science then it may have to happen. It may also be interesting to put one in soil to see the whole life cycle of the plane. However, again I have only two beans and the bean experiment only has a few weeks until we have to bring it to a conclusion, so priorities in the name of science must dictate that a dissection is the only way to go.