Looking for male baring sperm donor

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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.

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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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James WH. What stabilizes the sex ratio? Ann Hum Genet. Pilot and astronaut offspring: Possible G-force effects on human sex ratio. Aviat Space Environ Med. Reduced ratio of male to female births in several industrial countries: A sentinel health indicator? Use of albumin gradients for X and Y sperm separation and clinical experience with male sex preselection. Fertil Steril. The chromosome constitution of human spermatozoa. Hum Genet.

Fluorescent body distribution in spermatozoa in the male with exclusively female offspring. Bean B. Progenetive sex ratio among functioning sperm cells letter Am J Hum Genet. The ratios and separation of X and Y spermatozoa in human semen. Determination of sex ratio of spermatozoa with a deoxyribonucleic acid-probe and quinacrine staining: A comparison. Analysis of the primary sex chromosome aneuploidy and diploidy in human sperm using dual-colour fluorescence in situ hybridisation.

Eur J Genet. Simultaneous detection of X-and Y-bearing human sperm by double fluorescence in situ hybridization. Mol Reprod Dev. Cambridge: Cambridge University Press; How large should my study be so that I can detect an altered sex ratio? Martin RH. Sex ratio among sperm cells letter Am J Hum Genet.

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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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