一对有耳垂夫妇生了一个无耳垂小孩.某同学用黄白两色乒乓球模拟有无耳垂这一性状的遗传过程.1若用黄球模拟控制显性性状有耳垂的基因a则白 Template




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tomski一对有耳垂夫妇生了一个无耳垂小孩.某同学用黄白两色乒乓球模拟有无耳垂这一性状的遗传过程.1若用黄球模拟控制显性性状有耳垂的基因a则白 coloring