3 ms·

All human traits? How about the trait of being an only child?

• enkid 4y ago
  Having fewer children is certainly heritable.
  • musicale 4y ago
    The question I was actually raising was about the reliability of claims about a population that was explicitly excluded from the data. Your implication of the heritability of childlessness is similarly troubling, but I imagine you might be thinking of large families where nearly all siblings are childless.