TY - JOUR
T1 - Genetic influence on the expression of hand preferences in Chimpanzees (Pan troglodytes)
T2 - Evidence in Support of the Right-Shift Theory and Developmental Instability
AU - Hopkins, William D.
AU - Dahl, Jeremy F.
AU - Pilcher, Dawn
PY - 2001/7
Y1 - 2001/7
N2 - Genetic mechanisms have been proposed in explain the pervasive representation of right-handedness in humans, whereas random, nongenetic factors have been posited to explain the lack of population-level right-handedness in nonhuman primates. We report evidence that hand preferences in chimpanzees are heritable, even among related individuals raised in different environments. Furthermore, we report that the degree of heritability is modified by factors associated with developmental instability, notably, offspring parity. The data are interpreted to reconcile both genetic models for handedness and hypotheses suggesting that developmental instability influences variation in handedness.
AB - Genetic mechanisms have been proposed in explain the pervasive representation of right-handedness in humans, whereas random, nongenetic factors have been posited to explain the lack of population-level right-handedness in nonhuman primates. We report evidence that hand preferences in chimpanzees are heritable, even among related individuals raised in different environments. Furthermore, we report that the degree of heritability is modified by factors associated with developmental instability, notably, offspring parity. The data are interpreted to reconcile both genetic models for handedness and hypotheses suggesting that developmental instability influences variation in handedness.
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U2 - 10.1111/1467-9280.00355
DO - 10.1111/1467-9280.00355
M3 - Article
C2 - 11476096
AN - SCOPUS:0035403658
SN - 0956-7976
VL - 12
SP - 299
EP - 303
JO - Psychological Science
JF - Psychological Science
IS - 4
ER -