Scientists thought that reindeer lichens (moss-looking organisms that form a major part of reindeer diets) reproduced mainly asexually by cloning themselves. But it turns out, reindeer lichens are having a lot more sex than scientists expected. In a new study, researchers found that the reindeer lichens they examined have unexpected levels of genetic diversity, indicating that the lichens have been doing more gene-mixing with each other than the scientists would have guessed.
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