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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Lichen Love: A Natural History of Lichen (Part One) - North Cascades Institute
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Reindeer lichen, the impressive symbiotic relationship between a fungus and an alga! : r/mycology
calving – The Cairngorm Reindeer Herd
Reindeer Lichen: Fungus and Algae Living Together - New York Almanack