What genetic configuration is characteristic of Turner syndrome?

Turner syndrome is characterized by a genetic configuration of 45 XO, which means there is a missing X chromosome in females. Instead of the usual 46 chromosomes, individuals with Turner syndrome typically have only 45 due to the complete or partial absence of one of the X chromosomes. The designation "XO" indicates that there is one X chromosome present, but no second sex chromosome (which could be another X or a Y).

This genetic anomaly leads to a variety of clinical features, including short stature, lack of ovarian development, and various other physical and health issues. It is important to recognize that Turner syndrome only occurs in females, which distinguishes it from other conditions represented in the choices provided.

The other options represent different chromosomal configurations not related to Turner syndrome. For example, having 46 XX indicates a typical female karyotype, while 47 XXX suggests an extra X chromosome condition known as Triple X syndrome. The configuration 46 XY is characteristic of males, indicating the presence of one X and one Y chromosome.