Some plants almost exclusively clone themselves, like aspens or dandelions, and still others clone themselves sometimes and have sex other times, like the strawberry. Many plants are bisexual, with male and female genitalia occurring together on the same flower (in plant anatomy these are called, intriguingly, “perfect” flowers). The ancient ginkgo tree can spontaneously switch the sex of a section of its body, producing a female branch on an otherwise male tree. Ginkgo are one of the oldest lineages of trees we live alongside, having persisted for hundreds of millions of years, stubbornly
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