Period (gene)
Period (per) is a gene located on the X chromosome of Drosophila melanogaster. Oscillations in levels of both per transcript and its corresponding protein PER have a period of approximately 24 hours and together play a central role in the molecular mechanism of the Drosophila biological clock driving circadian rhythms in eclosion and locomotor activity. Mutations in the per gene can shorten (perS), lengthen (perL), and even abolish (per0) the period of the circadian rhythm.
Read more about Period (gene): Discovery, Mammalian Homologs of per, External References, See Also
Famous quotes containing the word period:
“Unless your baby becomes uncomfortable and tries to push away, don’t worry that you’re cuddling too much. That way, when she reaches adolescence and goes through a normal period of being terribly embarrassed even to be seen with you in public, you’ll have some memories to tide you over until she comes around again.”
—Lawrence Kutner (20th century)