Molecular genetics of avian proteins. XL Egg proteins of Gallus gallus, G. sonnerati and hybrids

SummaryBy a variety of electrophoretic procedures it has been found that Gallus gallus, whether as jungle fowl or as chickens, differs consistently from Sonnerat's jungle fowl, G. sonnerati, in three egg white proteins: G3 ovoglobulin, G2 ovoglobulin and glutamyl peptidase. The electrophoretic patterns of egg white hybrids between G. gallus and G. sonnerati are identical to those obtained after simpiy mixing the egg whites; there is no evidence for hybrid protein zones. Although Japanese data on serum amylase can be interpreted as indicating introgressive hybridization in the origin of the domestic fowl, so far the egg protein data are negative in this respect.