the answer is B besuae when you are your losing somethings
Explanation:
Psi packaging Element is a cis-acting RNA element identified in the genomes of the retroviruses Human immunodeficiency virus (HIV) and Simian immunodeficiency virus (SIV) It is involved in regulating encapsidation of the retroviral RNA, an essential step in replication.
Answer: The answer is A, Transcription
The blank is supposed to be 'saturated'