and Fernando Casares from the Andalusian Center for Development Biology (CABD), a joint center of the Higher Council for Scientific Research (CSIC), the Pablo de Olavide University and the Junta de Andalucía has concluded that the gills of Certain aquatic insects are the organ that shares the greatest number of genes with insect wings. The finding, made in a species of ephemeral, which, together with dragonflies, belongs to the oldest group of winged insects, is key to deciphering a long-posed question in evolutionary biology: how did wings appear in insects? The research has been published in the latest issue of Nature Communications. Researchers from other Spanish institutions such as the Department of Genetics of the University of

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Barcelona, ​​the Institut de Biologia Evolutiva (IBE-CSIC), the Center for Genomic Regulation (CRG) and the National Center for Genomic Analysis (CNAG) have also participated in the Croatia Phone Number List study. -CRG) and other research groups in five countries. Winged insects are the most diverse group of animals, with a greater number of species, than those currently inhabiting Planet Earth. Its appearance more than 320 million years ago, in the Carboniferous, was a total revolution in terrestrial ecosystems. Despite their great importance, no answers have yet been found as to how their rapid diversification occurred or what were the changes that occurred in the genomes of the ancestral insects that gave rise to them. In the Pterygota subclass, that is, the lineage of winged

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insects, a small number of genomes have still been investigated. However, it is known that one of the orders of this subclass, the order Ephemeroptera, better known by the name of mayflies, despite having diverged early in its phylogeny from the rest of the winged insects, its ancestors are among the first insects winged animals that appear in the fossil record. In this sense, the study of these species is essential to know the origin of the wings. The research also addressed whether gene expression in certain tissues is maintained in different species of winged insects. The research team explains that for the study, the genome of a species of mayflies , Cloeon dipterum , was sequenced and it was observed how their genes were expressed differently

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