0000950129-05-002895 DEF 14A 1 20050427 20050328 20050328 20050328 LEXICON GENETICS INC/TX 0001062822 2835 760474169 DE 1231 DEF 14A 34 000-30111 05706844 8800 TECHNOLOGY FOREST PLACE THE WOODLANDS TX 77381 2818633000 8800 TECHNOLOGY FOREST PLACE THE WOODLANDS TX 77381 DEF 14A 1 h23629def14a.txt LEXICON GENETICS INC.