Fig. 7From: Comprehensive analysis of three female patients with different types of X/Y translocations and literature reviewThe chromosomes X and Y pair and recombine at the meiosis, and fertilization. It is speculated that the patient 2’s der(X) is derived from the abnormal recombination of X chromosome Xq21.2 and Y chromosome Yq11.222 during meiosis of paternal spermatocytes, with an idiogram of 550 bandBack to article page