Water bears do not have extensive foreign DNA, new study finds

ScienceDaily: Tardigrades, also known as moss piglets or water bears, are eight-legged microscopic animals that have long fascinated scientists for their ability to survive extremes of temperature, pressure, lack of oxygen, and even radiation exposure. Now, a study has found that, contrary to a previous controversial proposal, tardigrades have not acquired a significant proportion of their DNA from other organisms. Instead, new analysis from the University of Edinburgh shows that nearly all of what was proposed......

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