Recombinant DNA Technology
An expression vector

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

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Recombinant DNA Technology
A human cDNA library

cannot be used to obtain human genes because it would be radioactive
None of these
contains DNA for virtually all of the human proteins in vectors
contains DNA for specific human proteins

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

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