[Chromosome abnormalities of human gametes and intrauterine selection. Male gametes]

Man appears to be unique among mammals with respect to very high level of reproductive wastage. It seems reasonable to suppose that many early losses attribute to cytogenetical abnormalities. However, this stage of pregnancy is difficult to be studied. The investigation of gametes is one of the most reliable ways to estimate the cytogenetical disorders in early life. The results from cytogenetical analysis of human male gametes are summarized.