IQ is determined by how many pairs of genes, on autosomal or sex chromosomes.

Eight pairs of genes that determine IQ Eight pairs of genes that determine IQ (it seems to be eight pairs) are all located on the X chromosome. Here, let's review how men and women come from: 6 F. }% s* T2 a8 _+ i+ c, C: [/ W The sex chromosome of a boy is XY, X (egg) comes from his mother, and Y (sperm) comes from his father. ! ? The sex chromosome of female students in P and W5 d# s' O is XX, X (egg) comes from mother, and X (sperm) comes from father. G4 i% v$ W, w So it is the husband's decision to have boys and girls. Don't blame mom's stomach for disappointing! ! ! ! -i3i； x ' K)e % s $ Z ' P & amp； U, f Please note:' O3v% Y5E0T: W Boys are XY, so boys' IQ is inherited from their mothers, and girls' IQ is XX, so half of girls' IQ is influenced by their parents. ! X "| 8 ~ 2p7 _ i Because the IQ of girls is influenced by both father and mother, there will be a neutralization effect. Therefore, the distribution of female students' IQ will show a normal distribution, that is, the most in the middle and less on both sides. . B/ g, s# X6 A3 ~ Boys are completely influenced by one side, so the IQ distribution of boys will be biased towards two extremes. In other words, there are more boys in geniuses, but at the same time, there are also many boys in fools. -I (? ) \+ u( g/ e5 | From this, we can draw a conclusion that you can judge whether a boy is smart or not by looking at his mother. ; R#？ ! J6Z9N & However, how to judge whether a boy's mother is smart or not, we use probability to calculate: 5 n! N$ m# Q8 }( B7 H, the real classical calculation begins. . . 8h+s-B& amplifier; z； c-f； ` 5 }# J Probability of having a boy =1/2; Probability of having a girl = 1/2. * Q $ L2c9 i8p2d $ Z2 7 f When a boy is born, the influence of his mother on his IQ = 1 4 u3 V+ F- b2 N! U. e2 B( \ W When giving birth to a girl, the influence of the mother on the IQ of the girl =1/26y&; I8 ~3 j8 k7 j0 q, s So the ratio of the influence (expected value) of mom and dad on the IQ of the next generation is # e) p9O * \ 9E8u1*1/2+1*/2. $ F+b6j ' } = 0.75:0.25 & amp； {( _$ d: F，J4 b！ q( K，}: \ = 3 : 1 4 G- Y% \5？ 5 t= mother: father (a "R6 f $ t1d0) So: $ p% {8 j. U8 b* |5 u 1, if you are a boy, if you think you are stupid. You must marry a smart girl. In this way, your child still has a 75% chance to turn over and life is still full of hope. ; ? 4 p！ C+ o9 g* e+ z- c 2。 If you are a girl, if you think you are stupid, you have a 75% chance of destroying others' offspring. If you hate someone, marry him. (This sentence is decisive. . . )6t "]； Z* E9 O+ w% H+ e3。 When you see a boy is smart, his mother must be smart, so if you are considering marrying a smart boy, you should be careful of his mother. She may be a calculating mother-in-law. ! On the other hand, when you see a boy is stupid, if he is rich, don' t hesitate to marry him. Don't think you are doing it for his money, you should tell yourself that you are doing it to improve the genes of future human beings.' H7 C & ampm . F-Y-o % u & amp； The last O2 h/U:3 S4 i9 h .[Z 1. Judging boys' IQ depends on your mother. ; ^) C7 X* B: a% u2。 In any case, stupid boys should marry smart girls. 5 r% |！ q，O)O & amp； z！ a； G & ampG 3。 Girls should not marry smart boys, but stupid boys. The clever boy's mother is very powerful. )