Haury, David L.2022-07-052022-07-051978-05https://hdl.handle.net/1794/2721851 pagesHemoglobin (Hb), one of the most abundant vertebrate proteins, distributes oxygen among body tissues following oxygenation at the respiratory interface between organism and environment. During the course of natural selection, the Hb molecules of a particular species take on biochemical and biophysical parameters which facilitate adaptation to a unique environmental regime. Extensive research has shown that during the life history of a particular organism there may be a progressive expression of Hb types as characteristic alterations in oxygen availability and oxygen demand occur. Such is the case among anurans; during the discrete postembryonic transition period known as metamorphosis , new molecular forms of Hb appear which persist in the adult frog.enCreative Commons BY-NC-ND 4.0-USMarine BiologyMetamorphosisHemoglobinAnuransThesis / Dissertation