Hektoen International

A Journal of Medical Humanities

Tag: monozygotic twins

  • A note on handedness

    JMS PearceHull, England, United Kingdom Handedness (chirality) refers to the preferential use of one hand over the other. It is a matter of degree; it is seldom absolute. Population left and right preference existed in the Neanderthals (lived from 400,000 to about 40,000 years ago) onwards. Only homo sapiens amongst the great apes shows strong…