Turner syndrome is characterized by which chromosomal configuration?

Turner syndrome is indeed characterized by the chromosomal configuration of XO, which means that individuals with this condition have only one X chromosome instead of the typical two X chromosomes that females normally possess. This can occur due to a nondisjunction during cell division, leading to the absence of one of the X chromosomes. As a result, individuals with Turner syndrome may exhibit a range of physical and developmental characteristics, such as short stature, delayed puberty, and various health complications.

Understanding the chromosomal makeup is crucial for recognizing how genetic configurations can lead to different syndromes and conditions. In contrast, the other configurations mentioned play a role in different syndromes: XXY is associated with Klinefelter syndrome, which occurs in males, while XXX indicates an extra X chromosome in females, leading to conditions such as Triple X syndrome.