Many animal species replace histones with protamines during spermatogenesis. Although essential for sperm function, protamines evolve rapidly for reasons that remain unknown. Using in vivo gene replac...

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Many parasites thrive despite severe inbreeding, challenging classic ideas about how they maintain genetic diversity. This study shows that Varroa mites, long assumed to be haplodiploid, instead use a...

Abstract. Natural selection might favour brightly coloured males and drab females. A male and a female might disagree about whether to mate. Such tensions

Recognizing the broad importance of selfish elements, the GSA journals have established a series to highlight the genetic mechanisms and evolutionary conse

In avocado and certain wild relatives in Lauraceae, a highly synchronized daily rhythm of floral sex timing promotes cross-pollination between two ...

Organisms appear remarkably well designed to live their lives. A seal, which seems all waddle and blubber on land, is transformed when it enters the water.

Abstract. Unlike birds and mammals, many teleosts have homomorphic sex chromosomes, and changes in the chromosome carrying the sex-determining locus, terme

Egan et al. report the discovery of a new trophic interaction in nature whereby a parasitic plant attacks multiple species of insects that manipulate plant tissue when the two co-occur on a shared pri...

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An insect that cooperates like bacteria

Evolution and mechanisms of atypical reproductive modes Monthly meetings to bring together researchers focusing on atypical reproduction and other non-mendelian transmission systems. The objective is to promote the exchange of ideas and feedback on conceptually similar questions approached with d...

Structurally complex regions of the genome are increasingly recognized as engines of evolutionary convergence due to their propensity to generate recurrent gene duplications that give rise to similar ...

Abstract. The first influential hypothesis for sex chromosome evolution was proposed in 1914 by H. J. Muller, who argued that once recombination was suppre

Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans...

X chromosomes evolve faster than autosomes, but confounding factors make this a difficult phenomenon to study. Utilising the unusual sex determination system of Sciaridae flies, this study finds a slo...