THE KARYOTYPE OF THE ADDAX AND ITS COMPARISON WITH KARYOTYPES OF OTHER SPECIES OF HIPPOTRAGINAE ANTELOPES

The karyotype of the addax (Addax nasomaculatus, 2n=58) has been inves tigated by RBG and CBG banding techniques. All chromosomes are acrocen tric except the first pair of autosomes, which is submetacentric. The X chromosome is the largest acrocentric, and the Y chromosome is a med ium sized acrocentric. According to the standard conventions used for cattle and goat, p- and q-arms of the pair of submetacentric autosomes correspond, respectively, to chromosomes # 27 and # 1. The comparison of banding patterns of chromosomes in addax and four other species of the subfamily Hippotraginae reveals several common features and a hig h degree of homoeology with caprine and bovine karyotypes.