As most irises are diploid, having two sets of chromosomes, this can be used to identify hybrids and classification of groupings.[1]:18 Iris mesopotamica is a tetraploid iris,[2][3]:25[19] which have developed from an autoploid.[20] It was counted by Sturtevant and Randolph, in 1945,[20] as 2n=45.[6][7][21]