(a) Retroviral infection :
Presence of retroviral vectors, such as some viruses, which use their recombinant DNA to insert their genetic material into the chromosomes of the host's cells. The virus is then propogated by the host cell.
(b) Reverse transcriptase :
Enzyme used by retroviruses to form a complementary DNA sequence (cDNA) from their RNA. The resulting DNA is then inserted into the chromosome of the host cell.
(c) Reverse transcription-PCR (RT-PCR)
PCR technique in which the starting material is RNA. The first step in the procedure is conversion of the RNA to cDNA with reverse transcriptase.
(d) Satellite
Chromosomal segment that branches off from the rest of the chromosome but is still connected by a thin filament or stalk.
