External References
http://www.sdbonline.org/fly/neural/period.htm
http://flybase.org/reports/FBgn0003068.html
Read more about this topic: Period (gene)
Famous quotes containing the word external:
“Language disguises the thought; so that from the external form of the clothes one cannot infer the form of the thought they clothe, because the external form of the clothes is constructed with quite another object than to let the form of the body be recognized.”
—Ludwig Wittgenstein (1889–1951)