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Try out PMC Labs and tell us what you think. Learn More. Purpose: The present study evaluated the proportions of X-bearing and Y-bearing sperm within the semen of donors who were the declared fathers of three or more sons or daughters. Methods: The proportions of sperm were determined using dual-color fluorescence in situ hybridization to identify the X and Y chromosomes. : The only difference observed was in semen volume.
There was no increase in the proportion of Y-bearing sperm for men with only sons Conclusions: A preponderance of either sons or daughters in a family cannot be explained simply by an altered ratio of X-bearing and Y-bearing sperm in the father's semen. These references are in PubMed.
This may not be the complete list of references from this article. National Center for Biotechnology InformationU. J Assist Reprod Genet. Author information Copyright and information Disclaimer. This article has been cited by other articles in PMC. Abstract Purpose: The present study evaluated the proportions of X-bearing and Y-bearing sperm within the semen of donors who were the declared fathers of three or more sons or daughters.
Keywords: fluorescence in situ hybridization, sperm, X chromosome, Y chromosome.
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Do alterations in the sex ratio occur at fertilization? A case report using fluorescent in situ hybridization.
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