Guerrero R
Stud Fam Plann. 1975 Oct;6(10):367-71.
Data that strongly suggest that the timing of insemination affects the human sex ratio at birth are presented. Two studies conducted by the author, including a total of 1,318 pregnancies, in which timing of insemination was related to the shift in basal body temperature are discussed, and previous literature is reviewed. The differential effect of type of insemination-natural versus artificial-is noted. The further question why timing and type of insemination affects the human sex ratio is also explored.
本文呈现了有力的数据，表明授精时间会影响人类出生时的性别比例。讨论了作者进行的两项研究，共涉及1318例妊娠，其中授精时间与基础体温变化相关，并对先前的文献进行了综述。还指出了自然授精与人工授精方式的不同影响。同时也探讨了授精时间和方式为何会影响人类性别比例这一进一步的问题。
