1. with regard to human ecology, the ratio of men to women conceptualized, being around 150:100. Male embryos are far more sensitive than their female counterparts, so the proportion of live births is around 110-105 males to 100 females. Commonly referred to as the primary sex ratio.

CONCEPTION RATIO: "The conception ratio is also termed as the primary sex ratio."
Cite this page: N., Pam M.S., "CONCEPTION RATIO," in, April 7, 2013, (accessed September 23, 2021).