fection ▁in ▁the ▁land ▁sn ail ▁Ari anta ▁ar b ustr um ". ▁In verte br ate ▁bi ology ▁ 1 2 4 ▁( 3 ), ▁ 1 9 4 - 2 0 1 ▁ ▁External ▁links ▁Pet ▁Sn ail ▁& ▁Sl ug ▁Problem s : ▁M ites ▁ ▁Category : A ra chn ids ▁of ▁Europe ▁Category : T rom bid iformes ▁Category : Anim als ▁described ▁in ▁ 1 7 7 6 <0x0A> </s> ▁SL IT - RO BO ▁R ho ▁G TP ase ▁activ ating ▁protein ▁ 2 C ▁is ▁a ▁protein ▁in ▁humans ▁that ▁is ▁encoded ▁by ▁the ▁SR G AP 2 C ▁gene . ▁ ▁Cort ical ▁development ▁gene ▁Sl it - Rob o ▁R ho ▁G TP ase - activ ating ▁protein ▁ 2 ▁( SR G AP 2 ) ▁has ▁been ▁highly ▁conser ved ▁over ▁m amm al ian ▁evolution , ▁and ▁human ▁is ▁the ▁only ▁line age ▁where in ▁gene ▁dup lications ▁have ▁occurred ▁( three ▁times ). ▁The ▁prom oter ▁and ▁first ▁nine ▁ex ons ▁of ▁SR G AP 2 ▁dup licated ▁from ▁ 1 q 2 3 . 1 ▁( SR G AP 2 A ) ▁to ▁ 1 q 2 1 . 1 ▁( SR G AP 2 B ) ▁ ∼ 3 . 4 ▁million ▁years ▁ago ▁( my a ). ▁Two ▁larger ▁dup lications ▁later ▁copied ▁SR G AP 2 B ▁to ▁chrom os ome ▁ 1 p 1 2 ▁( SR G AP 2 C ) ▁and ▁to ▁proxim