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(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)īusiness Standard has always strived hard to provide up-to-date information and commentary on developments that are of interest to you and have wider political and economic implications for the country and the world. "They became short by selection acting on this standing variation already present in the population, so there's little need for genes from an archaic hominin to explain their small stature," Green said. "It means that these gene variants were present in a common ancestor of Europeans and the Flores pygmies. "It sounds like a boring result, but it's actually quite meaningful," Green said. Tucci and her colleagues analysed the Flores pygmy genomes with respect to height-associated genes identified in Europeans, and they found a high frequency of genetic variants associated with short stature. Height is very heritable, and geneticists have identified many genes with variants linked to taller or shorter stature. The researchers did find evolutionary changes associated with diet and short stature.
There is no indication of gene flow from the hobbit into people living today," Green said. "If there was any chance to know the hobbit genetically from the genomes of extant humans, this would have been it," said Richard Green, an associate professor at the University of California-Santa Cruz (UCSC). We expected that, because we knew there was some migration that went from Oceania to Flores, so there was some shared ancestry of these populations," said Tucci, first author of the study published in the journal Science.īut there were no chromosomal "chunks" of unknown origins, researchers said. "They definitely have a lot of Neanderthal. She used this technique with the genomes of 32 modern pygmies living in a village near the Liang Bua cave on Flores Island, where H floresiensis fossils were discovered in 2004. "We scan the genome and look for chunks that come from different species - Neanderthal, Denisovans, or something unknown," said Tucci. "In your genome - and in mine - there are genes that we inherited from Neanderthals," said Serena Tucci, a postdoctoral research associate at Princeton University. H floresiensis was significantly smaller than the modern Flores pygmies, standing about 3.5 feet tall, while modern pygmies average about 15 inches taller. They found that a modern pygmy population evolved short stature independently of the extinct 'hobbit' pygmy species that lived on Flores Island, tens of thousands of years earlier.
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