Sperm down syndrom

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Why Are There Special Gifts for Each Anniversary Year? That may not actually be the case, however, according to the latest study in JAMA Psychiatry investigating how advanced paternal age can affect rates of mental illness and school performance in children. Older eggs can develop chromosomal problems. While a year-old father may pass on an average of 25 mutations to his child, a year-old dad may bequeath each offspring as many as 65; the researchers calculated that the de novo mutation rate doubled with every Prof Egozcue said that increasing age in mothers had long been known to be one of the greatest risk factors in babies suffering from chromosome anomalies, which can lead to miscarriages or physical and mental handicaps. Any use of this site constitutes your agreement to the Terms and Conditions and Privacy Policy linked below. People should take them into account when planning a family.
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What causes Down syndrome?

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Understanding Genetics

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Dad's Age Raises Down Syndrome Risk, Too

Down syndrome is caused by a random error in cell division that results in the presence of an extra copy of chromosome Any use of this site constitutes your agreement to the Terms and Conditions and Privacy Policy linked below. For the first time it has been proved that men have biological clocks just like women and that the older a man is, the more likely it is his sperm will contain defects.
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