▁compart ment ▁but ▁research ▁suggests ▁it ▁may ▁have ▁other ▁functions . ▁ ▁Go ose berry ▁The ▁go ose berry ▁gene ' s ▁role ▁in ▁segment ation ▁was ▁believed ▁to ▁be ▁involved ▁in ▁segment - pol ar ity ▁class ▁of ▁segment ation ▁gen es ▁required ▁for ▁the ▁formation ▁of ▁lar val ▁segments ▁because , ▁during ▁emb ry ogen esis , ▁half ▁of ▁the ▁lar val ▁segments ▁are ▁replaced ▁by ▁the ▁remain ▁half ▁segment , ▁but ▁in ▁a ▁revers ed ▁polar ity , ▁which ▁suggested ▁that ▁go ose berry ▁was ▁a ▁single ▁gene . ▁However , ▁it ▁is ▁believed ▁that ▁this ▁mechanism ▁is ▁controlled ▁by ▁two ▁dup licated ▁gen es ▁instead ▁of ▁one , ▁which ▁are ▁called ▁go ose berry ▁( gs b ) ▁and ▁go ose berry ▁ne uro ▁( gs bn ). ▁ ▁Development ▁of ▁the ▁Central ▁N erv ous ▁System ▁( C NS ) ▁ ▁Research ▁into ▁z yg otes ▁of ▁D ros oph ila ▁have ▁indicated ▁that ▁several ▁segment ▁polar ity ▁gen es ▁are ▁vital ▁for ▁segment ation ▁involved ▁in ▁ne uro blast ▁formation ▁and ▁different iation ▁of ▁cell ▁into ▁their ▁ne uro blast ▁identity ; ▁thereby , ▁developing ▁the ▁central ▁nerv ous ▁system . ▁Research ▁on ▁the ▁loss - of - function ▁mut ations ▁in ▁these ▁gen es ▁of ▁D ros oph ila ▁suggests ▁that ▁segment ▁polar ity ▁gen es ▁interactions ▁are ▁also ▁responsible ▁for ▁ne uro blast ▁division , ▁affect ing ▁the ▁quantity ▁of ▁ne uro bl asts ▁as ▁well ▁as ▁their ▁specific ity . ▁ ▁References ▁ ▁Category