Models for Post-Transcriptional Gene Silencing (PTGS) | Genetics
In this article we will discus about the models for post-transcriptional gene silencing (PTGS). Production of dsRNA from inverted transgene repeats and single copy transgene triggers PTGS. It was proposed that dsRNA would be act as template for an RNA-directed RNA polymerase. Atleast four models have been proposed to explain induction of PTGS. First model is known as threshold model [...]