The first woolly mammoth was warm, but the last woolly mammoths was warmer, according to a paper published in Current Biology.
states that the most famous features of the woolly mammoths, including their fluffy fur, intensified throughout their 700,000-year stint in Siberia.
Ultimately, the results revealed that the mammoth’s wool was present since the start of the species, but became more and more prominent over time, making the mammoth better suited to its frosty surroundings.The team sequenced the genomes of 23 woolly mammoths, 16 of which had never been sequenced before. They wanted to identify the genes that had been present among the mammoths for a long time and had accrued a lot of mutations throughout that time.
That being said, these traits developed throughout the existence of the woolly mammoth. “The very earliest woolly mammoths weren't fully evolved,” Dalén says, according to the release. “Their wool was different — perhaps less insulating and fluffy compared to later woolly mammoths.”
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