“…Flow cytometry is one of the most sensitive techniques used for quantifying cellular DNA (reviews in 14, 52,62) and has been used to determine the nuclear DNA content of many animal species, including vertebrates from fishes to mammals (11,12,36,37,40,42,53,57,58,60), and mollusks (1,191. It was also used for determination of cell or sperm ploidy in fishes, amphibians, and reptiles (1,2,6,7,21,22, 35,61), sex identification in birds (45), as well as for investigation of genome elimination of one of the parents in hybridogenetic frogs (10,661 and hybrid fishes (27).…”