Recombinant DNA Technology
An expression vector

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

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Recombinant DNA Technology
A human cDNA library

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

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Recombinant DNA Technology
Knockout mice are created by

infecting the mouse with a retrovirus
mutagenizing a mouse and selecting for mutant offspring
transfecting embryonic stem cells with an altered gene sequence
creating a chimera by fusing cells from two different cell lines

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