Una reciente publicación en Science revela la existencia de una pérdida convergente entre todos los mamíferos marinos. Through phylogenetic analysis, the researchers found that you among all the lineages of marine mammals (manatees, dugongs, dolphins, seals, sea lions and elephant seals) had accumulated a number of injuries in a gene pleiotropic which encodes for the enzyme paraoxonase 1 (PON1). This enzyme is associated with the digestion of ingested by feeding fatty acids, but also relate to detoxification capacity to break the molecules organophosphorus, widely used in pesticides. This loss of convergent function, absent in terrestrial mammals, prevents marine mammals protection against toxic compounds than currently produced in high proportions.
- Mutations in a gene associated with the language are not specific for human
- Genetic analysis reveals a direct descendant between two distinct groups of hominids