The possible inheritance of two asymmetries, hand clasping and arm folding, have been analyzed in 86 families with 414 progeny indigenous to Spanish Basque Country. The results show that the two analyzed traits are not sex linked. The analysis of family data shows evidence that one of the asymmetries, arm folding, is familial and probably genetic.
Arrieta, M. I.; Martinez, B.; and Lostao, C. M.
"Hand Clasping and Arm Folding: Analysis of Familial Data,"
6, Article 3.
Available at: http://digitalcommons.wayne.edu/humbiol/vol60/iss6/3