A CDNA Library Is Produced from ______________ and Is Valued

Multiple Choice

A cDNA library is produced from ______________ and is valued in the analysis of __________________.

A) chromosomal DNA digested with restriction enzymes;chromosomal organization
B) chromosomal DNA digested with restriction enzymes;the promoter and regulatory elements of a particular gene
C) a DNA copy of mRNA isolated from a group of cells;the protein-encoding open reading frame of a gene (no introns)
D) a DNA copy of mRNA isolated from a group of cells;the promoter and regulatory elements of a particular gene
E) protein sequences isolated from particular tissues;enzyme function encoded by a particular gene