Avocado Trees Switch Sexes Twice A Day - This Ancient Gene Explains How

Researchers have identified a specific gene, SDMYB, that controls the daily sexual role-switching behavior in avocado trees. This genetic mechanism has remained consistent for over 40 million years, explaining the biological rhythm of A-type and B-type avocado varieties.
Long before the guacamole reaches the table, the tree that grew that avocado has already run through a biological performance that has puzzled scientists for nearly a century. Avocado trees switch sexual roles twice a day, every day, on a precise schedule. Now, researchers have identified the single gene most strongly linked to it, and its story stretches back about 42 million years.
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