7.c 解析考查的是病毒遗传物质的特点烟草花叶病毒的遗传物质是rna而蛋白质不是遗传物质因此在�中组合病毒的遗传物质是b型的因此 Template




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tomski7.c 解析考查的是病毒遗传物质的特点烟草花叶病毒的遗传物质是rna而蛋白质不是遗传物质因此在�中组合病毒的遗传物质是b型的因此 coloring