作者: Satoshi Kanazawa , Nancy L. Segal
DOI: 10.1007/S11692-019-09470-0
关键词: Genetic variability 、 Inclusive fitness 、 Longitudinal study 、 Twin study 、 Offspring 、 Attractiveness 、 Biology 、 Genetic recombination 、 Developmental psychology 、 Dizygotic twins
摘要: Evolutionary theories generally concur that sexual reproduction and genetic recombination evolved to maximize variability. Thus, the existence of monozygotic (MZ) twins, which do not take advantage for each offspring, poses a puzzle. logic inclusive fitness suggests parents with high-quality genes may be more likely produce MZ twins. Analyses data from National Longitudinal Study Adolescent Adult Health show twins were significantly physically attractive healthier than dizygotic (DZ) singletons. These results suggest possess higher-quality DZ singletons, support one first evolutionary twinning specifies its ultimate functions.