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- Aug 15, 2006
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So theres often one or two of these on the practice exams. I almost always find myself starting one of these and thinking "I don't have time to sit here and draw this thing out right now!" and I just end up guessing. Are you guys actually sitting there drawing these things out? Or are there faster ways to predict "how many will be tall and short", and the answer is usually a fraction. I'm not talking about the X-linked ones either. I mean like the TtRr x ttRr kinda ones.