Sex as stress management in microbes

Why is sex so popular? The question of why so many organisms reproduce sexually has mystified evolutionary biologists since before Darwin, who wrote, "The whole subject is as yet hidden in darkness." In a recent article in ...

Tracing the evolution of vision in fruit flies

The function of the visual photopigment rhodopsin and its action in the retina to facilitate vision is well understood. However, there remain questions about other biological functions of this family of proteins (opsins) ...

Evolutionary rotation of fly genitalia tied to mating success

In the order Diptera, more-primitive species such as mosquitos generally do their deed in the end-to-end position. Higher (more evolved) species such as flies tend toward the male mounting the female from behind (male-above ...

Migrants face a trade-off between status and fertility

Researchers from the Universities of Helsinki, Turku and Missouri as well as the Family Federation of Finland present the first results of a new, extraordinarily comprehensive population-wide dataset that details the lives ...

Distinguishing males from females among king penguins

It is difficult to distinguish males from females among King Penguins, but a new Ibis study reveals that King Penguins can be sexed with an accuracy of 100% based on the sex-specific syllable pattern of their vocalisations. ...

A sex difference in sports interest: What does evolution say?

Sports are enormously popular, and one striking pattern is that boys and men are typically much more involved than are girls and women. This sex difference has policy implications, and it raises fundamental questions about ...

Adapting to -70C in Siberia: A tale of Yakutian horses

From an evolutionary perspective it happened almost overnight. In less than 800 years Yakutian horses adapted to the extremely cold temperatures found in the environments of eastern Siberia. The adaptive process involved ...

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