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实际上，除了“偷情基因”人类还拥有一种“滥情基因”。
来自宾汉顿大学的学者发现了一个叫DRD4的多巴胺受体基因，如果携带了该基因，人常常会在 *** 、出轨等 *** 性行为下分泌更多的多巴胺，从而失去理性。
他们一旦出轨，也往往一发不可收拾。当科学家们对DRD4基因进行溯源时发现，这种基因早在旧石器时代就已经出现。
参考资料：
[1]Walum， Hasse et al. “Genetic variation in the vasopressin receptor 1a gene (AVPR1A) associates with pair-bonding behavior in humans.” Proceedings of the National Academy of Sciences 105 (2008)： 14153 - 14156.
[2]Thibonnier M ， Graves M K ， Wagner M S ， et al. Study of V1-vascular Vasopressin Receptor Gene Microsatellite Polymorphi *** s in Human Essential Hypertension[J]. Journal of Molecular & Cellular Cardiology， 2000， 32(4)：557-564.
[3]Lim， Miranda M. et al. “Enhanced partner preference in a promiscuous species by manipulating the expression of a single gene.” Nature 429 (2004)： 754-757.
[4]Guo， Guang and Yuying Tong. “Age at first sexual intercourse， genes， and social context： Evidence from twins and the dopamine D4 receptor gene.” Demography 43 (2011)： 747-769.
[5]Chen， Shuangli et al. “Different effects of the DRD4 genotype on intrinsic brain network connectivity strength in drug-naïve children with ADHD and healthy controls.” Brain Imaging and Behavior 16 (2021)： 464 - 475.
[6]Bersted， Kyle A. and Lisabeth Fisher DiLalla. “The influence of DRD4 genotype and perinatal complications on preschoolers negative emotionality☆.” Journal of Applied Developmental Psychology 42 (2016)： 71-79.
