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【单选题】
Isocaudarner presents（ ）
A.
Various restriction endonucleases recognize same palindrome, but cut at identical site
B.
Various restriction endonucleases recognize different palindromes, but produce same sticky ends
C.
Various restriction endonucleases recognize same palindrome, but cut at different site
D.
Various restriction endonucleases recognize same palindromes, and produce same sticky ends
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参考解析：
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【判断题】In most chronic myelogenous leukemia, tumorigenesis is caused by oncogene amplification（ ）
A.
正确
B.
错误
【判断题】In the PCR reaction, the purpose of annealing is to make the combination of primer and template. （ ）
A.
正确
B.
错误
【单选题】In lac operon, repressor protein could bind to( )sequence.（ ）
A.
lac Z
B.
promoter
C.
lac I
D.
operator
【多选题】What are the solutions used in the experiment?（ ）
A.
70% ethanol
B.
Isopropanol
C.
Phenol/chloroform/ Isopropanol(25/24/1)
D.
TE buffer
【单选题】Plasmids are usually introduced into bacterial cells by.（ ）
A.
Transfection
B.
Infection
C.
Transformation
D.
Transduction