Recombinant DNA Technology
An expression vector

always contains an origin of replication
usually contains a gene that confers antibiotic resistance to the bacterial host
always contains DNA segments for the regulation of mRNA production
All of these

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Recombinant DNA Technology
Which of the following is correct in terms of determination of location of genetic traits?

Restriction sites allow DNAs to be digested
Known protein coding sequences are too far apart to allow linkage determination for most new genes
None of these
Protein-coding genes are always associated with a restriction pattern

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