Sentences with phrase «correlated sex ratios»
She correlated sex ratios of foals with their mothers» condition at three different points: at conception, halfway through their 11 - month pregnancies, and at the foal's birth.
http://discovermagazine.com/
Of those that correlated sex ratios with the mothers» condition at the time of conception, she found that three - fourths supported Trivers and Willard.