Reverse transcriptase is characteristic of retroviruses, including HIV (human immunodeficiency virus), the virus responsible for AIDS (acquired immunodeficiency syndrome). All retroviruses encode a polymerase enzyme in their pol gene that is both necessary and sufficient for the replication of their RNA genomes.
PDO positive phase global pattern. The Pacific Decadal Oscillation (PDO) is a robust, recurring pattern of ocean-atmosphere climate variability centered over the mid-latitude Pacific basin.
Pacific Ocean: Surface currents. ... 1 the Kamchatka Current forms the cold Oya Current, which flows to the east of the Japanese island of Honshu to meet the warm Kuroshio waters in the vicinity of 36Â° N. The cold, southeast-flowing California Current forms the eastern segment of the returning branch of the North Equatorial Current system.