研究表明,通过X和Y染色体分布,有两个非继承遗传因素影响人类1:1性别比。 Study reveals two non-inherited genetic factors influencing human 1:1 sex ratio through X and Y chromosome distribution.

密歇根大学研究人员Siliang Song和Zhang Jianzhi Zhang的一项研究调查了人类1:1的性别比,查明了影响它的两种遗传变异,而这两种变异不是遗传的。 A study by University of Michigan researchers Siliang Song and Jianzhi Zhang investigates the human 1:1 sex ratio, identifying two genetic variants affecting it, which are not inherited. 与许多偏斜比率的动物不同,人类通过精子和蛋中的X和Y染色体分布保持这种平衡。 Unlike many animals with skewed ratios, humans maintain this balance through X and Y chromosome distribution in sperm and eggs. 研究结果表明,尽管遗传变异性很大,但进化和统计机制以及人类一夫一妻制有助于这种平衡。 The findings suggest that evolutionary and statistical mechanisms, along with human monogamy, contribute to this equilibrium, despite high genetic variability.