CHROMOSOME STUDY OF A MARMOSET HYBRID

The mating of a Saguinus oedipus male with a S. midas female produced a set of viable fraternal twins, of which the male was the subject of this study. The female co-twin died prior to this investigation. Although the karyotype of the male hybrid monkey was similar to both parents, cytological and histological studies of its testes demonstrated only meiotic arrest and the animal was presumed to be sterile. Various mechanisms of hybrid sterility are discussed. © 1968 S. Karger AG, Basel.