单选题野生型玉米的体细胞和生殖细胞中均存在淀粉,而基因Wx失活(突变为wx)后,wx wx纯合体细胞中不含淀粉,表现为果实皱缩。确定纯合野生型植株中Wx突变为wx频率的最好方法是:()A收集数百植株的玉米棒,计数皱缩果实的比例B对玉米叶片进行切片,计数没有淀粉粒的细胞所占比例C分别提取大田中每个玉米植株的基因组,对该基因PCR扩增后测序,计算突变序列所占比例D用碘液对花粉染色,计数未能着色的花粉所占比例

单选题
野生型玉米的体细胞和生殖细胞中均存在淀粉,而基因Wx失活(突变为wx)后,wx wx纯合体细胞中不含淀粉,表现为果实皱缩。 确定纯合野生型植株中Wx突变为wx频率的最好方法是:()
A

收集数百植株的玉米棒,计数皱缩果实的比例

B

对玉米叶片进行切片,计数没有淀粉粒的细胞所占比例

C

分别提取大田中每个玉米植株的基因组,对该基因PCR扩增后测序,计算突变序列所占比例

D

用碘液对花粉染色,计数未能着色的花粉所占比例


参考解析

解析: 暂无解析

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