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 Daylight Time (PDT ) = GMT-7. Pacific Daylight Time is the Pacific Time Zone of the United States of America (USA) and Canada. Pacific Standard Time (PST) is 8 hours behind Greenwich Mean Time (GMT-8). In most states in the USA and in most provinces in Canada, Daylight-Saving Time (DST) is observed. During DST PT or PDT is 7 hours behind Greenwich Mean Time (GMT-7).