http://www.childrenshospital.org/dream/summer10/different.html
Interesting case. The possible cause of the discordance isn't mentioned, and there seems little room for either nature or nurture to vary: same genes, same environment. So how can this be? I know of one other example of striking discordance between MZ twins. In that case, one of the pair of female twins developed Duchenne muscular distrophy, a crippling disorder; the other twin became a skilled gymnast. It was explained as a result of an unusual pattern of X-inactivation of the X-chromosome. Since in this case both children are genetically male, a simlar explanation won't work here. Burn, J. et al (1986). Duchenne muscular dystrophy in one of monozygotic twin girls. J Med Genet 1986;23:494-500 Stephen -------------------------------------------- Stephen L. Black, Ph.D. Professor of Psychology, Emeritus Bishop's University e-mail: sblack at ubishops.ca 2600 College St. Sherbrooke QC J1M 1Z7 Canada ----------------------------------------------------------------------- --- You are currently subscribed to tips as: [email protected]. To unsubscribe click here: http://fsulist.frostburg.edu/u?id=13090.68da6e6e5325aa33287ff385b70df5d5&n=T&l=tips&o=3472 or send a blank email to leave-3472-13090.68da6e6e5325aa33287ff385b70df...@fsulist.frostburg.edu
