Science
fromwww.npr.org
6 days agoHave all girls or all boys? Study suggests the odds aren't 50/50
Families may have a distinct tendency toward having either boys or girls during childbirth.
The human sex ratio has long been of interest to biologists, statisticians, demographers, sociologists, and economists. Here, we showed that within each sibship size, sex at birth did not conform with a simple binomial distribution and identified a significant intramother correlation in offspring sex.