Gene Expression
The circadian rhythm in the SCN is generated by a gene expression cycle in individual SCN neurons. This cycle has been well conserved through evolution and is essentially similar in cells from many widely different organisms that show circadian rhythms.
Read more about this topic: Suprachiasmatic Nucleus
Famous quotes containing the word expression:
“Barring that natural expression of villainy which we all have, the man looked honest enough.”
—Mark Twain [Samuel Langhorne Clemens] (1835–1910)