Recombinant DNA Technology
Isoschizomers recognize

same recognition site and recognition sequence
different recognition site and different recognition sequence
same recognition sequence but different recognition site
same recognition site and different recognition sequence

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Recombinant DNA Technology
An expression vector

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

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Recombinant DNA Technology
Knockout mice are created by

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

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Recombinant DNA Technology
An example of a restriction fragment length polymorphism is

All of these
cystic fibrosis results from a three base deletion in most cases but in other cases, other mutations are involved
different length fragments of DNA resulting from loss or gain of a restriction site
an Eco RI cuts DNA at a different sequence than Hind III

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