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【单选题】
荧光原位杂交(FISH)主要用于
A.
同时对样品中多种类核酸进行检测和分析
B.
确定被检核酸在组织或细胞中的定位
C.
检测组织样品中的DNA
D.
检测细胞基因拷贝数的变化或者mRNA含量的变化
参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】In the 1920s demand for American farm products fell, as European countries began to recover from World War I and instituted austerity (紧缩) programs to reduce their imports. The result was a sharp drop...
A.
might cause greater scarcity of farm products
B.
didn't give the Secretary of Agriculture enough power
C.
would benefit neither the government nor the farmers
D.
benefited one group of citizens at the expense of others
【单选题】当F+×F-杂交是下列说法对的是( )
A.
F因子几乎总不转移到F+细胞中
B.
F- 菌株几乎总成为F+
C.
基因重组的发生频率较高
D.
F因子经常插入到F-细胞染色体上