title: The precise human bioclock, possibly imported.
abstract: Contrary to what has long been suggested, the biological clock is not a poor timekeeper. In fact, it has been working in precision for millions of years as a genetically set clock, independent of environmental periodicity. However, as the Earth's rotation has gradually slowed, this internal clock has gone through a relative phase shift. Extrapolating of changes backwards through time shows that the clock was set when mammals first appeared on the planet. Interestingly, primates are the only beings that have a free-running cycle longer than 24 hours. This bioclock may be set by lunar entrainment, or may be set extraterrestrially?
authors.affiliation: Department of Pharmacology, Kirikkale University Medical School, Kirikkale, Turkey. sk06-k@tr.net
authors.forename: Z A
authors.initials: ZA
authors.lastname: Keskil
authors.forename: S
authors.initials: S
authors.lastname: Keskil
mesh_terms: D000818:Animals; D001683:Biological Clocks; D005075:Biological Evolution; D002940:Circadian Rhythm; D018534:Earth, Planet; D006801:Humans; D008322:Mammals / Q000502:physiology; D008954:Models, Biological; D016081:Moon; D011323:Primates / Q000502:physiology; D013045:Species Specificity; D013493:Suprachiasmatic Nucleus / Q000502:physiology