子代染色体异常因双亲的某一方带有同样的或与之有关的异常染色体所致,称为家族性异常染色体。带有这种异常染色体而表型正常的人群称为平衡易位携带者,他们在人群中占0.47%。平衡易位携带者在生育后代时,容易引起流产、死胎、生育智力低下患儿等严重后果,引起子代的遗传效应。本文对因父母一方为平衡易位携带者而生育了异常 Progeny chromosomal abnormalities due to one side of the parents with the same or related to abnormal chromosomes, known as familial abnormal chromosomes. People with this abnormal chromosome but normal phenotype are referred to as balanced translocations and they account for 0.47% of the population. Balanced translocation carriers in the offspring, easily lead to miscarriage, stillbirth, impotence and other children with serious consequences, causing offspring of the genetic effect. This article gives birth to an anomaly due to a balanced translocation carrier by one parent