The condition or process of having multiple identical sets of chromosomes derived from the same species.
From autopolyploid + -y (state or condition). This genetic term developed alongside polyploidy studies to classify this specific type of chromosomal multiplication.
Autopolyploidy is one of the main ways new plant species spontaneously emerge in nature—it's essentially nature's copy-paste button for entire genomes, and it's happened more often than you'd think.
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