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RE: Hunger Hormones
A lot of proteins are closely related because from a genetic standpoint they all come from the same gene. When a gene is replicated and you're left with two copies it leads to redundancy which means one version of the gene is able to go off and mutate into a new protein with a completely new function without harming the functionality of the organism!
Yea, I study genetics :D But the more I study the more mind-blown I get.
I know I just checked out your page. Great topic to study, I did my honours thesis in genomics... you're right that the lab work is dry! :/