CDNA
Complementary DNA.
CDNA is single-stranded DNA made in the laboratory from a messenger RNA template under the aegis of the enzyme reverse transcriptase.
This form of DNA is often used as a probe in the physical mapping of a chromosome.</P> A cDNA library is a collection of DNA sequences generated from mRNA sequences.
This type of library contains only DNA that codes for proteins and does not include any non-coding DNA.