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：
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