One of their most striking features is the large amount of cellular DNA that dinoflagellates contain. Most eukaryotic algae contain on average about 0.54 pg DNA/cell, whereas estimates of dinoflagellate DNA content range from 3–250 pg/cell, corresponding to roughly 3000–215 000 Mb (in comparison, the haploid human genome is 3180 Mb and hexaploid "Triticum" wheat is 16 000 Mb). Polyploidy or polyteny may account for this large cellular DNA content, but earlier studies of DNA reassociation kinetics and recent genome analyses do not support this hypothesis. Rather, this has been attributed, hypothetically, to the rampant retroposition found in dinoflagellate genomes.