The genetic condition of being an amphiploid; a state of having multiple chromosome sets from different species origins, often found in plants.
From 'amphiploid' + '-y' (condition suffix). Developed in 20th-century genetics as polyploid speciation became recognized as a major evolutionary mechanism, especially in plants.
Amphiploidy is evolution's turbo button—wheat became wheat through amphiploidy, creating instant new species that could never breed back with parents, all in one genetic accident, which is why it's common in crops.
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