Having man mostly sperm y

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Other groups have examined whether infertility impacts the offspring gender ratio. Moreover, as most couples who obtained sperm FISH had IVF failure, it is uncertain if the findings are applicable to all men and further confirmatory studies are warranted. Logistic regression was used to determine the relationship between the seminal parameters volume, concentration, motility and TMC and the odds of producing a Y chromosome-bearing sperm vs. To explain this phenomenon, investigators have postulated that the more powerful mobility that a Y chromosome-bearing sperm possesses over its X-bearing counterpart may be diminished, thus lowering the likelihood of a male birth. What stabilizes the sex ratio? This article has been cited by other articles in PMC.

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An analysis of Geissler's data on the human sex ratio.

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Sperm counts and sperm sex ratio in male infertility patients

Offspring sex ratio of subfertile men and men with abnormal sperm characteristics. Trend analysis of the sex ratio at birth in the United States. Natl Vital Stat Rep. Other groups have examined whether infertility impacts the offspring gender ratio. Reproductive outcomes in families of DBCP-exposed men. While over sperm were analyzed, the number of individual men for evaluation was limited. The rationale and methods of semen analysis and sperm FISH analysis have been previously described.

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