This Week in Evolution: Sex, sexiness, viruses, nematodes, and horses

Haploinsufficiency and the sex chromosomes from yeasts to humans
"orthologues of S. cerevisiae HI genes (those for which a reduction in copy number in a diploid from two to one results in significantly reduced fitness) are significantly under-represented on the X chromosomes of mammals... accumulation of HI genes on the sex chromosomes would compromise fitness in both sexes, given X chromosome inactivation in females"

Natural selection stops the evolution of male attractiveness
"lack of genetic variation that would allow an increase in sexual fitness while simultaneously maintaining nonsexual fitness"

A Virophage at the Origin of Large DNA Transposons

Computational and phylogenetic validation of nematode horizontal gene transfer

Dietary Change and Evolution of Horses in North America

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This Week in Evolution

See also my "Darwinian Agriculture Blog."

Sex, sexiness, viruses, nematodes, and horses

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