The conditions in the environment are subject to large fluctuations. In Germany, for instance, temperatures can range from a freezing minus 20 degrees Celsius in the winter to a hot 40 degrees Celsius in the summer. Organisms that are unable to adapt to such temperature changes will not survive and thus will not pass on their genetic information to the next generation. In a world in which we are confronted with constantly rising average temperatures due to global warming, we must ask ourselves: How do organisms react to changing temperatures? What molecular mechanisms do they use?
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Source: Phys.org