What condition results from an egg cell without an X chromosome being fertilized by an X-bearing sperm cell?

The correct condition resulting from an egg cell without an X chromosome being fertilized by an X-bearing sperm cell is Turner's syndrome. In this scenario, the fertilization leads to a zygote with only one X chromosome, resulting in a total of 45 chromosomes instead of the typical 46. This condition specifically affects females and is characterized by the presence of a single sex chromosome instead of the usual pair, which is crucial for normal development.

Individuals with Turner's syndrome typically display a variety of physical and developmental features, including short stature, ovarian dysgenesis, and various physical anomalies. The absence of a second X chromosome impairs normal sexual development, often resulting in infertility and other health complications.

Understanding this helps clarify the genetic implications of chromosomal configurations and their direct impact on an individual's health and development. Other syndromes listed involve different chromosomal abnormalities, such as additional chromosomes or different configurations, which do not produce the same outcomes as Turner's syndrome resulting from the absence of an X chromosome.