A type of hybridization
. In this case, a strand of DNA
is joined with a complementary
strand of RNA
to form a double-stranded molecule
(or one which is partly double-stranded, if one of the original single strands is shorter than the other).
From the BioTech Dictionary at http://biotech.icmb.utexas.edu/. For further information see the BioTech homenode.