Twinning during the pandemic: Evidence of selection in utero.
Ralph CatalanoTim BrucknerJoan A CaseyAlison GemmillClaire E MargerisonTerry HartigPublished in: Evolution, medicine, and public health (2021)
Our finding of fewer than expected male twin births during the onset of the COVID-19 pandemic provides more evidence that evolution continues to affect the characteristics and health of contemporary populations.