Sex causes altruism. Altruism causes sex. Maybe.
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چکیده
منابع مشابه
Sex causes altruism. Altruism causes sex. Maybe.
This study presents a mathematical model in which the fitness of an individual depends on the individual's genotype (individual effects) and on the genotypes of other members of the individual's local group (group effects). The findings suggest that, if phenotypes are a result of complex interactions between genes at different loci, then fitness-enhancing group effects may become common in sexu...
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Treatment programs for serious offenders such as sex offenders typically include an empathy training component as part of a comprehensive intervention package. The reasons for doing so are partly based on research evidence indicating that social disconnection and relationship ruptures related to empathy failures often trigger offending, and also because it is hard for people to grasp how indivi...
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As it was realized that natural selection should favour behaviours that benefit the individual rather than the species it belongs to, explaining the occurrence of altruistic behaviours has become one of the central problems in evolutionary biology. The seminal work of William Hamilton (1964) paved the way for a revolutionary approach, focusing on how genes may benefit copies present in other in...
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We study gender differences in altruism by examining a modied dictator game with varying incomes and prices. Our results indicate that the question “which is the fair sex?” has a complicated answer—when altruism is expensive, women are kinder, but when it is cheap, men are more altruistic. That is, we nd that the male and female “demand curves for altruism” cross, and that men are more respon...
متن کاملSex-ratio conflicts, kin selection, and the evolution of altruism.
Kin-selection theory has thrived in the explanation of a wide variety of biological phenomena, chiefly the evolution of biological altruism as that found in sterile castes of eusocial insects. Much of the way in which it has been tested is based on the existence of conflicts over sex-ratio production within eusocial colonies. However, despite neatly showing eusocial colonies as arenas where sel...
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ژورنال
عنوان ژورنال: Proceedings of the Royal Society of London. Series B: Biological Sciences
سال: 2004
ISSN: 0962-8452,1471-2954
DOI: 10.1098/rspb.2003.2650