Have all girls or all boys? Study suggests the odds aren't 50/50

Newborn babies lie in bassinets in the nursery of a postpartum recovery center in upstate New York in 2017. A new study examined births over decades to find tendencies toward having all girls or all boys.

A study analyzed decades of births and found that larger families showed a distinct tendency toward all girls or all boys, rather than a mix.

(Image credit: Seth Wenig)