Science · Facts & sources
4 sourced facts about biological sex demographics, each with the context behind the number. 4 more are in today's round and appear here after it closes.
Answerabout 101 men per 100 women
Even though more boys are born, higher male mortality at older ages narrows the gap across a lifetime.
Source: Wikipedia (2024) en.wikipedia.org
Answerabout 1.06
Small but measurable differences in birth sex ratios show up between different population groups.
Source: Wikipedia (2025) en.wikipedia.org
Answerabout 118 boys per 100 girls
That was well above the natural global average, a legacy in part of past family-planning policies and cultural son preference.
Source: Wikipedia (2010) en.wikipedia.org
Answera slight decreasing trend
The ratio moved only slightly, from about 1.059 down toward 1.046 male births per female birth over those decades.
Source: Wikipedia (2025) en.wikipedia.org