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

an Eco RI cuts DNA at a different sequence than Hind III
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
All of these

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Recombinant DNA Technology
An expression vector

All of these
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

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