Which of the following describes the phenomenon of promoter occlusion seen in retroviruses?

Question

Quizplus · Accepted Answer

Promoter occlusion is a phenomenon seen in retroviruses where transcription from one LTR inhibits or occludes transcription from the other LTR. In particular, transcription from the left-hand LTR often inhibits transcription from the right-hand LTR, leading to a preference for transcription of the upstream viral genes before the downstream genes. This is due to the fact that RNA polymerase complexes transcribing from the left-hand LTR remain bound to DNA and prevent the binding of additional RNA polymerase complexes to the right-hand LTR.

Which of the Following Describes the Phenomenon of Promoter Occlusion