What Do Sex, Twins, Spotted Hyenas, ADHD, and Sexual Orientation Have in Common?

Dennis McFadden1

  • 1Department of Psychology and Center for Perceptual Systems, University of Texas mcfadden@psy.utexas.edu.

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Like autosomes, sex chromosomes contain a variety of genes necessary for normal body function. When a mutation in one of these genes results in biological deficits, the disorder is considered sex-linked.
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