
【名词&注释】
基因突变(gene mutation)、减数分裂(meiosis)、单倍体(haploid)、体细胞(somatic)、单子叶植物(monocotyledon)
[多选题]下列关于变异的说法正确的是:
A. 单倍体的体细胞中可以含有多个染色体组
B. 基因重组出现在减数分裂第一次分裂过程中
C. 基因突变可产生新的基因
D. 非同源染色体之间交换片段属于染色体变异
查看答案&解析
举一反三:
[单选题]As a new diplomat, he often thinks of ______ he can react more appropriately on such occasions.
A. what
B. which
C. that
D. how
[单选题]洋葱属于单子叶植物(monocotyledon)。( )
A. 正确
B. 错误
[单选题]Many buildings in the city need repairing, but the one ______first is the library.
A. repaired B. being repaired
B. repairing
C. to be repaired
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