Extra chromosome in Down syndrome explained by age and genetics
Reader questions about maternal age and Down syndrome risk. Dr Donahue explains humans have 46 chromosomes in pairs, with Down syndrome caused by an extra chromosome 21. Risk rises with maternal age. a 30 year old has about 1 in 1000, a 45 year old about 1 in 50. Fathers contribute a small share. Viagra age claim not supported.
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Dear Abby advice column on marriage and shared living
A reader seeks guidance on a failing marriage with children, his wife’s withdrawal, and possible divorce. Abby counsels marital counseling, potential family-law custody steps, and warns that the wife’s attitude may not improve post divorce.
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