Biology
Are humans more closely related to fungi than to plants?
You are more closely related to a mushroom than a mushroom is to a plant. Animals and fungi share a common ancestor (Opisthokonta) that split from plants earlier.
Source: Baldauf & Palmer (1993), PNAS.
Context
Yes. Animals and fungi belong to one group, the Opisthokonta, which share a common ancestor that split from the plant line earlier. Baldauf and Palmer showed this with molecular data in 1993.
It is why antifungal drugs are harder to design than antibiotics: fungal cells work a lot like ours. A mushroom is, in the family tree, closer to you than it is to the grass it grows in.
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