After I posted the breakdown of the supposedly-final version of the RAS ChiChi genome, Dragoler offered up a criticism of it. Specifically, she pointed out that the way RAS consumed muscle tissue when breeding probably wouldn't be all that effective in adding a cost to creature breeding without also adding in a gene that prevented breeding outright in creatures who weren't taking care of themselves.
As it was, RAS creatures can just keep kisspopping and laying eggs even when their muscle tissue is at 0, and not actually suffer all that much for it considering amino acid (and thus muscle tissue) isn't actually used for all that much by default; mostly the production of prostaglandin and also as an emergency backup should glucose levels be low but amino acid levels be higher (this setting aside the fact RAS also uses prostaglandin to heal wounds, which in my experience is a more frequent occurrence than just organ injury).
Now, the reason I didn't stop RAS creatures with low muscle tissue from breeding to begin with was partially out of concerns over compatibility, but also partially because the levels of muscle tissue in RAS are much less stable than they are in TWBs. I monitored the levels of a group of first-gen RAS ChiChis with the Biochemistry Kit to double-check this, and sure enough they commonly had levels of muscle tissue below the levels that would prevent breeding in TWBs.
