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.
They are opposite phases of the same oscillation (El Nino Southern Oscillation) centered in the Tropical Pacific Ocean. El Nino niÃ±o is a weather phenomena which tends to occur in tropical waters of The Pacific. Ocean it affects the region across The pacific From New guinea To South, america known as The Equatorial. pacificcientific investigations of this phenomenon are ongoing, and it is yet to be determined whether El Nino niÃ±o is oceanic or. Atmospheric La nina niÃ±a is the Opposite Of. El nino it involves cooler than normal sea temperatures in the same part Of The. pacific ocean