GROUP G MONOSOMY By N., Pam M.S. - May 11, 2013 Term for a rare chromosomal disorder where the G chromosome is affected. It may be not present or partly present. Causes sever mental retardation and short hands like spades. GROUP G MONOSOMY: "Group G monosomy affects chromosome 21 and 22." Related Psychology Terms PRADER-WILLI SYNDROME (PWS| DOWN SYNDROME KLINEFELTER'S SYNDROME CAT'S-EYE SYNDROME PSEUDOTRISOMY 18 CRI DU CHAT SYNDROME RING CHROMOSOME 18 XXYY SYNDROME FRAGILE X CHROMOSOME DE LANGE'S SYNDROME Cite this page: N., Pam M.S., "GROUP G MONOSOMY," in PsychologyDictionary.org, May 11, 2013, https://psychologydictionary.org/group-g-monosomy/ (accessed September 21, 2019).