Reverse transcriptases are enzymes encoded in retroviruses viral genome. The enzyme is responsible for transcription of the viral RNA to produce a dsDNA that can be inserted into the host genome.
Pacific Ocean Basin. The Pacific Ocean is bounded on the east by the North and South American continents; on the north by the Bering Strait; on the west by Asia, the Malay Archipelago, and Australia; and on the south by the Southern Ocean.
The Great Basin is defined by hydrology and physiography. It is a region of interior drainage bounded prominently on the west by the Sierra Nevada and the Cascade Range and on the east by the middle Rocky Mountains and the Colorado Plateau.