L’embried nonconformist is his first informative work. David Bueno i Torrens (Barcelona, ​​1965), the doctor in Biology, is a professor of Genetics at the University of Barcelona. His professional and academic career has focused on developmental genetics and neuroscience, and their relationship with human behavior. He has been a researcher at the University of Oxford and has carried out stays in different European and North American research centers. He has published about sixty scientific articles in specialized magazines, as well as popular science and essay books. Co-author of several educational and encyclopedic works, he also regularly collaborates in the media ( El Punt Avui, Ara, Ràdio 4). In 2010 he won the European Prize for Scientific Dissemination The first animals evolved from their single-celled ancestors about 800 million years ago,

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but new research suggests that this leap to Costa Rica Email List multicellular organisms on the tree of life may not have been as drastic as scientists assumed. In an article published October 13 in the journal Developmental Cell, a group of researchers show that the unicellular ancestor of animals probably already possessed some of the mechanisms that animal cells use today to give rise to different types of tissues. “We studied the past, the evolutionary transition that was important for the origin of animals,” explains Iñaki Ruiz – Trillo, an evolutionary biologist at the Institute of Evolutionary Biology in Barcelona, ​​Spain. “We show how these primitive organisms already had certain behaviors that were believed to be only present in multicellular animals. With this starting point, the evolutionary leap should have been simpler. ” The researchers studied an amoeba called

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Capsaspora owczarzaki, which is a single-celled organism close to today’s multicellular animals. Capsaspora was initially discovered as a living host in a freshwater snail and has been used by Ruiz-Trillo’s group to learn more about the evolution of animals. Ruiz-Trillo and his team sequenced the Capsaspora genome in a previous project and discovered that the amoeba contained many genes that, in animals, are related to multicellular functions. Being a unicellular organism, Capsaspora cannot have different cell types at the same time as we have, for example, humans. However, an individual of Capsaspora can change its cell type over time and go from a solitary amoeba to an aggregated colony of cells or a cystic form throughout its cell cycle. This new study explores the extent to which Capsaspora uses the same mechanisms to control its cell differentiation as animals do to

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