y染色体基因少但也不是没有，母亲智力对儿子影响并不比父亲的显著很多参考资料： Reed and Rich, Parent-Offspring Correlations and Regressions for IQ, Behavior Genetics, Vol. 12, No. 5, 1982 Ropers and Hame, X-linked mental retardation, Nature Reviews Genetics 6, 46-57, 2005 Nguyen and Disteche, High expression of the Mammalian X chromosome in brain, Brain Research, 1126: 46-49, 2006 Gregg, Parental Control over the Brain, Science: Vol. 330 no. 6005 pp. 770-771, 2010 Zechner et al, A high density of X-linked genes for general cognitive ability: a run-away process shaping human evolution? TRENDS in Genetics, Vol. 17, No. 12, 697-701, 2001