更多"Before DNA fingerprinting is used, "的相关试题:
[单项选择]Before DNA fingerprinting is used, suspects ________.
A. would have to leave their fingerprints for further investigations
B. would have to submit evidence for their innocence
C. could easily escape conviction of guilt
D. could be convicted of guilt as well
[单项选择]The significance of the DNA fingerprinting is that ______.
A. the patterns of genetic material are unique in everybody
B. it can be used to identify criminals by testing their DNAs
C. DNA testing can tell the wanted information of some people
D. DNA testing can help those who are wrongly accused
[单项选择]According to the passage, DNA fingerprinting can be unreliable when ______.
A. the methods used of blood-cell calculation are not accurate
B. two different individuals of the same ethnic group may have the same DNA fingerprinting pattern
C. a match is by chance left with fingerprints that happen to belong to two different individuals
D. two different individuals leave two DNA samples
[单项选择]DNA fingerprinting can be unreliable when ________.
A. the methods used for blood-cell calculation are not accurate
B. two different individuals of the same ethnic group may have the same DNA fingerprinting pattern
C. a match is by chance left with fingerprints that happen to belong to two different individuals
D. two different individuals leave two DNA samples
[单项选择]When used in criminal investigation, DNA fingerprinting requires ______.
[单项选择]It can not be used before( )
A. inspect
B. insoected
C. being inspected
D. inspecting
[单项选择]Before stamps were used, postage ______.
A. was paid by the letter-writers
B. was paid by the letter-receivers
C. was got by postmen
D. both B and C
[单项选择]Before the drug is used on human beings, experts have to ______ dogs.
A. be experimented
B. experiment
C. experiment with
D. experiment on
[单项选择]The electric shaver needs （） before it can be used.
A. repairing
B. to repair
C. being repaired
D. to be repairing
