下列关于一条染色体的叙述正确的是 A.都含有一个着丝点b.只有一条染色单体c.都有二条染色单体d.只有一个dna分子——青夏教育精英家教�—— Template




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tomski下列关于一条染色体的叙述正确的是 a.都含有一个着丝点b.只有一条染色单体c.都有二条染色单体d.只有一个dna分子——青夏教育精英家教�—— coloring