One of the Primary Reasons for Generating a Large Number

Multiple Choice

One of the primary reasons for generating a large number of clones in a eukaryotic genomic library is that ________.

A) each cosmid replicates in coordination with the host chromosome
B) lysogenic phages continue to integrate their DNA into the host chromosome, thus reducing the number of desired recombinant clones
C) each vector can take up only a relatively small fraction of the eukaryotic DNA
D) each ligation product is sequence specific
E) the host range of the vector is limited