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举报参考答案：
举一反三
【单选题】核酸杂交是指（）。
A.
不同的核酸链经变性处理，它们之间形成局部的双链
B.
一小段核苷酸聚合体的单链，用放射性核素或生物素来标记其末端或全链
C.
运输氨基酸
D.
单股DNA恢复成双股DNA
E.
50%双链DNA变性时的温度
【单选题】Northern印迹杂交是（）
A.
检测DNA的方法
B.
检测RNA的方法
C.
检测蛋白的方法
D.
检测酶的方法
E.
既可检测DNA，又可检测RNA的方法
【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
【单选题】TEXT D 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 sha...
A.
The impact of the Great Depression.
B.
The shrinking of overseas markets.
C.
The destruction caused by the First World War.
D.
The increased exports of European countries.
相关题目：
【单选题】核酸杂交是指（）。
A.
不同的核酸链经变性处理，它们之间形成局部的双链
B.
一小段核苷酸聚合体的单链，用放射性核素或生物素来标记其末端或全链
C.
运输氨基酸
D.
单股DNA恢复成双股DNA
E.
50%双链DNA变性时的温度
【单选题】Northern印迹杂交是（）
A.
检测DNA的方法
B.
检测RNA的方法
C.
检测蛋白的方法
D.
检测酶的方法
E.
既可检测DNA，又可检测RNA的方法
【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
【单选题】TEXT D 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 sha...
A.
The impact of the Great Depression.
B.
The shrinking of overseas markets.
C.
The destruction caused by the First World War.
D.
The increased exports of European countries.
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