细胞遗传学的临床应用性别的鉴别当精子与卵子结合成为孕卵时,已决定性别。性别的鉴定在临床上有重要的意义,例如两性畸型的病人,无论在诊断或治疗方面均需要决定其性别。对伴性遗传的一些遗传性疾病,用羊水细胞作产前性别的鉴定也十分需要。过去常用间期核的 X 染色质(或称 X 小体)来决定女性性别,自从荧光显带技术发现 Identification of the clinical application of sex in cytogenetics Gender has been determined when sperm and egg are combined to become eggs. The identification of gender has important clinical significance. For example, patients with hermaphroditism need to determine their gender in diagnosis or treatment. For hereditary genetic diseases, it is also necessary to use amniotic fluid cells for the identification of prenatal sex. In the past, interstellar X-chromatin (or X-body) was used to determine the sex of women, since the discovery of fluorescence banding technology.