Genetics of Dominance
Date: June 2004
What is the genetics for left-handedness?
Population studies on twins and non-twins suggest a genetic component to
handedness...There is far from any conclusive evidence. As in most
behaviors, it probably involves a group of genes.
Here are two good studies:
Klar, A.J.S., A Single Locus, RGHT, Specifies Preference for Hand
Utilization in Humans, Cold Spring Harbor Symposium on Quantitative Biology,
CSHL Press, (1996)
Orlebeke, J.F., Left-Handedness in Twins: Genes or Environment?, Cortex
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Update: June 2012