This syndrome is characterized by the presence of one or more extra X chromosomes, and the karyotype 47 ... levels of follicle-stimulating hormone (FSH), and hypogonadism. 1 The cause of this ...

Each chromosome pair viewed in a karyotype appears to have its own distinct "bar code" of bands. What changes do scientists look for in a karyotype when diagnosing diseases and disorders?

For example, prolactinomas (tumours that secrete excess prolactin) can suppress GnRH production, decrease LH and FSH levels ...