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