下列关于染色体的叙述中正确的是 A.染色体是生物的主要遗传物质b.每种生物的细胞内染色体的形态和数目都是一定的c.生物体内的染色体数目 Template




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tomski下列关于染色体的叙述中正确的是 a.染色体是生物的主要遗传物质b.每种生物的细胞内染色体的形态和数目都是一定的c.生物体内的染色体数目 coloring