后天学关于性别决定的理论模式

On the Theoretical Mode of Sex Decided by Hou-tian-xue

《周易》“乾坤生六子”之说是我国古代关于人类子代性别决定问题的一个理论模式．其核心观点认为，性别决定乃为乾坤合子（太极）在即时环境下的自我选择过程，生男生女取决于这个合子内部阴阳爻的传递方向，而子代个体的遗传特征及变异性则受制于爻位变化．

The theory of Qian-kun-Sheng-liu-zi in Zhou Yi (male and female birth decided by the arrangement of lines of one of the Eight Diagrams) is a theoretical mode of deciding whether the birth is male or female. Its core is that sex is more often represented by the Qian-kun-he-zi symbol, which indicates that sex is the process of choice in the actual environment. Whether the birth is male or female is decided by the Yin-line arrangement direction inside the Qian-kun-he-zi. The hereditary characteristics and its change of the individuals are decided by the line arrangement of Yao of the Eight Diagrams.