Recombinant DNA Technology
Knockout mice are created by

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

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Recombinant DNA Technology
A human cDNA library

None of these
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

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

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

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