What fathers in the animal kingdom can tell us about humans
When people talk about animal parents, often they are thinking about mothers. But the role of fathers in the animal kingdom is fascinating—and can tell us a lot about ourselves.
When people talk about animal parents, often they are thinking about mothers. But the role of fathers in the animal kingdom is fascinating—and can tell us a lot about ourselves.
Evolution
Jul 3, 2024
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Pioneering AI-powered research on butterflies has probed the under-studied evolution of females and adds to a debate between the founding fathers of evolution.
Evolution
Jul 1, 2024
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Venture capital plays an important role in helping new businesses get off the ground. The field also has a stubborn gender gap.
Social Sciences
Jun 26, 2024
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Juvenile social play predicts adult reproductive success in male bottlenose dolphins, a new study has found.
Plants & Animals
Jun 10, 2024
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66
A new study from The University of Western Australia and Edith Cowan University has found evidence of what's long been suspected—that men are more likely to be risk-takers than women.
Social Sciences
Jun 7, 2024
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We live in a world where not everyone feels safe and respected, especially women. Sexual violence and abuse are significant global health issues.
Social Sciences
Jun 4, 2024
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Women's participation in politics is essential to advancing women's rights and contributes to countries' overall stability and economic prosperity. According to a 2023 report by UN Women and the Inter-Parliamentary Union, ...
Social Sciences
May 29, 2024
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22
Researchers from Dresden University of Technology (TUD) and the University of Sheffield have discovered that male fertility can adapt to microbes. These findings shed new light on the importance of sperm ecology and might ...
Evolution
May 24, 2024
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Humans have long been fascinated by bird song and the cacophony of other avian sounds—from coos and honks to quacks and peeps. But little is known about how the unique vocal organ of birds—the syrinx—varies from species ...
Plants & Animals
May 23, 2024
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Students at all-girls' schools do slightly better in their exams than girls at co-educational schools, according to new research from the United Kingdom.
Social Sciences
May 23, 2024
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Male (♂) refers to the sex of an organism, or part of an organism, which produces small mobile gametes, called spermatozoa. Each spermatozoon can fuse with a larger female gamete or ovum, in the process of fertilization. A male cannot reproduce sexually without access to at least one ovum from a female, but some organisms can reproduce both sexually and asexually.
Not all species share a common sex-determination system. In humans and most animals, sex is determined genetically but in other species it can be determined due to social, environmental, or other factors. The existence of two sexes seems to have been selected independently across different evolutionary lineages (see Convergent Evolution). Accordingly, sex is defined operationally across species by the type of gametes produced (ie: spermatozoa vs. ova) and differences between males and females in one lineage are not always predictive of differences in another.
Male/Female dimorphism between organisms or reproductive organs of different sexes is not limited to animals; male gametes are produced by chytrids, diatoms and land plants, among others. In land plants, female and male designate not only the female and male gamete-producing organisms and structures but also the structures of the sporophytes that give rise to male and female plants.
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