試題詳解

18. Which of the following does not apply to the construction or use of a DNA library?
(A) Specialized DNA libraries can be made by cloning DNA copies of mRNAs.
(B) Determining the location of a particular DNA sequence in a DNA library requires a suitable hybridization probe.
(C) The DNA copies of mRNA found in a cDNA library are made by reverse transcriptase.
(D) Many segments of DNA from a cellular genome are cloned.
(E) Genomic libraries are better for expressing gene products than cDNA libraries.