Letters

Entrenched misinformation about X and Y sperm

BMJ 2006; 332 doi: https://doi.org/10.1136/bmj.332.7546.916-b (Published 13 April 2006) Cite this as: BMJ 2006;332:916
  1. Valerie J Grant, senior lecturer (vj.grant@auckland.ac.nz)
  1. University of Auckland, Private Bag 92019, Auckland 1, New Zealand

    EDITOR—The widely held idea that spermatozoa bearing the Y chromosome (Y sperm) swim faster than those bearing the X chromosome (X sperm) seems to have originated from Shettles's work in 1960, using phase-contrast microscopy.1 He claimed to have observed “two distinct …

    View Full Text

    Sign in

    Log in through your institution

    Subscribe