Human Genetics Problem Set

Problem 18: DNA expressed as mRNA transcripts

Which of the following is a marker for regions of the DNA expressed as mRNA transcripts, and characterized by cDNA cloning?

A. RFLPs, "restriction fragment length polymorphisms"

B. ESTs, "expressed sequence tags"
The term "EST" is now used to describe the DNA sequence of a short fragment of a cDNA copy of mRNA. mRNAs are expressed sequences.

C. STRPs, "short tandem repeat polymorphisms"

D. STSs, "sequence tagged sites"

E. all of the above

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Revised: November 5, 1998
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