无论在传统的印象里还是教科书的概念里,人类生男生女都是随机事件,女性后代(XX)与男性后代(XY)在概率上是50%:50%。但是科学家们的一项研究可能要打破这一传统认知,人类生育后代的实际情况可能比想象的更加复杂。基于这项研究我们也来聊聊近几年科研界非常热的概念——性别转化,在一些动物族群中,一些动物会主动转换自己的性别,以满足族群发展和生殖繁衍的需求,科学家们做了很多研究来试图发现他们背后的原理。同时我们也来揭露一下,网上看到的那些“号称能让人生男孩或生女孩”的各种不靠谱产品,辟辟谣、打打假!内容时间轴:00:35 从生育补贴聊起,生男生女真的是随机的吗?3:42 你们是不是也看到过很多家庭里有好多个女孩+1个男孩,或者好多个男孩+1个女孩?10:15 基因与性别,生育概率背后的科学是怎么回事?16:15 父母外貌与子女性别有关系吗?21:03 父母财富与生育子女性别的进化视角25:17 性别比例的影响因素有哪些,从遗传与环境的作用聊聊29:46 揭露性别选择伪科学:警惕各种产品骗局34:29 卵泡期与胎儿性别的关系,以及生物性别逆转现象38:54 动物性别转化与哺乳动物变性研究进展#参考资料 Kanazawa S. Big and tall parents have more sons: further generalizations of the Trivers-Willard hypothesis. J Theor Biol. 2005;235(4):583-590. doi:10.1016/j.jtbi.2005.02.010 L.L. Betzig 《Despotism and differential reproduction: a Darwinian view of history》,1986 Kanazawa S. Beautiful parents have more daughters: a further implication of the generalized Trivers-Willard hypothesis (gTWH). J Theor Biol. 2007;244(1):133-140. doi:10.1016/j.jtbi.2006.07.017 Zhou J, Chen L, Li J, et al. The Semen pH Affects Sperm Motility and Capacitation. PLoS One. 2015;10(7):e0132974. Published 2015 Jul 14. doi:10.1371/journal.pone.0132974 Weinberg CR, Baird DD, Wilcox AJ. The sex of the baby may be related to the length of the follicular phase in the conception cycle. Hum Reprod. 1995;10(2):304-307. doi:10.1093/oxfordjournals.humrep.a135932 Gonen N, Futtner CR, Wood S, et al. Sex reversal following deletion of a single distal enhancer of Sox9. Science. 2018;360(6396):1469-1473. doi:10.1126/science.aas9408 Hurtado, A., Mota-Gómez, I., Lao, M. et al. Complete male-to-female sex reversal in XY mice lacking the miR-17~92 cluster. Nat Commun 15, 3809 (2024).#song list • Cello Suite No. 1 in G Major, BWV 1007:I. Prélude - Janos Starker • Love From Me-Johnson Rodgie • Study With Me - Snuggles • Mark Masri - Santa Lucia听友群加VX:hooley777商务合作:[email protected]
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