Category Archives: Science

The genetics of Mexico recapitulates Native American substructure and affects biomedical traits

Mexico, hosted many cultures such as the Olmec, the Toltec, the Maya and the Aztec, conquered and colonized by the Spanish Empire in 1521. The country harbors a large source of pre-Columbian diversity and their genetic contributions to today’s population. … Continue reading

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Electrogenic fish – what’s in charge of the charge?

Electric organs – organs that are capable of creating and discharging electricity – have evolved independently in at least six different lineages of fish (Torpediniformes, Rajiformes, Mormyroidea, Euteleostei, Siluriformes, Gymnotiformes) and play an important role in communication, navigation, defense and … Continue reading

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Genomic basis of the convergent evolution of electric organs

Electric organs in fish have evolved independently in six lineages and are an interesting example of convergent evolution. However, the genetic basis underlying the convergence of this trait is poorly understood. By sequencing and assembling the transcriptomes from the electric … Continue reading

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The Amborella Genome and the Evolution of Flowering Plants

Amborella trichopoda, an endemic species to New Caledonia, is the most early-diverging taxa of flowering plants (angiosperms, Figure 1). As such, the sequencing of its genome was of considerable interest for the investigation of the emergence and evolution of this … Continue reading

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The evolutionary history of polar bears

The study of the Ursus lineage, including brown bear (Ursus arctos), black bear (Ursus americanus) and polar bear (Ursus maritimus), provides the ability of addressing the subject of adaptation to extreme (salty and glacial) environments in mammals. Moreover, in last … Continue reading

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Classic Selective Sweeps Were Rare in Recent Human Evolution

With the rise of genomics and the availability of whole genome sequences, geneticists hope to be able to understand the recent adaptations humans underwent. Classic selective sweeps, where a beneficial allele arises in a population and subsequently goes to fixation, … Continue reading

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