sex determination

例句：

1. 1. In the study of human evolution, sex determination is a crucial factor in determining an individual's characteristics.
   在人类进化研究中，性别决定是决定个体特征的关键因素。
2. 2. The research on sex determination has led to new insights into the biological mechanisms underlying sexual reproduction.
   关于性别决定的研究表明了影响有性生殖的生物机制的新见解。
3. 3. The decision about whether to have children is often influenced by factors such as genetic sex determination and fertility rates.
   决定是否要孩子往往受到遗传性别决定和生育率等因素的影响。