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Human cell lines regress to become ‘de-sexualized’ by reconfiguring to a 2:3 X/A ratio of high fitness, thus shedding light on the evolution of mammalian sex chromosomes.

Vocal development in marmoset monkeys begins in utero.

Use of experimental manipulation demonstrates that social/solitary feeding behaviors are unrelated to the fitness gains conferred by causative alleles in two previously identified genes.

Evolution strictly preserves telomere stability but rapidly diversifies telomere length regulation in Drosophila.

An investigation of transposable element evolution in a group of long-term asexual animals shows that many of the predicted effects of asexuality are not observed.

Heritable variation in the benefit maize plants receive from arbuscular mycorrhizal fungi supports the feasibility of breeding crops to optimize use of this ancient symbiosis.

The model organism Tetrahymena thermopile carries two nuclei with distinct genomes: an unrearranged germline genome with five chromosomes, and a somatic genome reduced in size by a third and with 181 chromosomes.

This microscale cultivation strategy will help in the discovery of novel bacterial species and their prioritization for antibiotic screening campaigns.

A family of homing genetic elements that look like inteins but work differently is the progenitor of the endonuclease that enables Saccharomyces cerevisiae to change its mating type.