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murzikaleks [220]
4 years ago
12

How was left handed started? Pls give me a summary on the history of left handedness.

History
1 answer:
icang [17]4 years ago
6 0

Genetic factors. Handedness displays a complex inheritance pattern. For example, if both parents of a child are left-handed, there is a 26% chance of that child being left-handed. A large study of twins from 25,732 families by Medland et al. (2006) has indicated that the heritability of handedness is roughly 24%.

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