进行有性生殖的生物其亲子代之间总是存在一定差异的主要原因是 A基因重组 b基因突变 c染色体变异 d生活条件改变——青夏教育精英家教�—— Template




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tomski进行有性生殖的生物其亲子代之间总是存在一定差异的主要原因是 a基因重组 b基因突变 coloring