Miscarriages, down syndrome, and infertility all linked to this hidden DNA process

Human fertility hinges on a delicate molecular ballet that begins even before birth. UC Davis researchers have uncovered how special protein networks safeguard chromosomes as eggs and sperm form, ensuring genetic stability across generations. Using yeast as a model, they revealed how crossovers between chromosomes are protected for decades in female eggs, preventing errors that could lead to infertility, miscarriage, or conditions like Down syndrome.