History
Orthologs of AgRP, ASIP, MCIR and MC4R have been found in mammalian, teleost fish and avian genomes. This suggests that the agouti-melanocortin system evolved by gene duplication from individual ligand and receptor genes in the last 500 million years.
Read more about this topic: Agouti-related Peptide
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“It’s not the sentiments of men which make history but their actions.”
—Norman Mailer (b. 1923)
“The history of our era is the nauseating and repulsive history of the crucifixion of the procreative body for the glorification of the spirit.”
—D.H. (David Herbert)
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—Karl Marx (1818–1883)