A cDNA library differs from a genomic DNA library in which way?
A) It consists solely of RNA molecules
B) It contains many copies of the gene of interest
C) It contains only coding sequences, not introns
D) It is typically 10-100 times the size of a DNA library

Question

Quizplus · Accepted Answer

A cDNA library is derived from a population of mRNA molecules, which only contain coding sequences without introns. This is in contrast to genomic DNA libraries, which contain the entire genomic DNA sequence, including introns and non-coding regions.

A CDNA Library Differs from a Genomic DNA Library in Which