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

Protein-coding genes are always associated with a restriction pattern
Known protein coding sequences are too far apart to allow linkage determination for most new genes
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

All of these
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

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