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Existe risco de deformidades se primos de segundo grau se casarem?

Há um risco insignificante de defeitos congênitos em filhos de primos de segundo grau que se casam. While the risk of birth defects is theoretically doubled compared to unrelated parents (from 2-3% to 4-6%) this small increase is not enough to warrant significant concern. Some families have a higher incidence of a specific genetic disorder, so if there are known hereditary conditions in your family, it would be wise to consult with a genetic counselor before making a decision about marriage.