deprecated terms Globin Locus deprecated Globin Gene true http://www2.nau.edu/~bio372-c/class/evolution/glbgnclst.htm 'The hemoglobin molecule that transports oxygen in the blood is made up of a number of components. Human hemoglobin is a tetramer: in adults it is made up of two alpha globins and two beta globins; in the fetus, of two alpha and two g globins; and in the embryo, two e and two z globins. The sequences of these five globin types are similar and the genes that code for them occur in clusters on the chromosomes. In humans, there are two main clusters of globin genes: the alpha globin cluster on chromosome 16 and the beta globin cluster on chromosome 11. [Curator team: []]'