cDNA libraries
A) are the same as genomic libraries.
B) include DNA from noncoding sequences.
C) require DNA polymerase for their construction.
D) require reverse transcriptase for their construction.
E) are likely to contain all protein-coding genes.

Question

Quizplus · Accepted Answer

cDNA libraries are constructed from mRNA by using reverse transcriptase to synthesize cDNA, which lacks introns and includes only coding sequences. Noncoding sequences are not present in cDNA libraries. Therefore, cDNA libraries are likely to contain all protein-coding genes but not genomic sequences, which includes noncoding regions.

CDNA Libraries