AIIMS 2018 Botany Chromosomal Disorders MCQ Question

Turner syndrome is caused by the complete or partial absence of one X chromosome, resulting in the karyotype 45,XO, where "XO" indicates the missing chromosome. This genetic condition leads to various developmental and physiological features, including short stature and ovarian insufficiency. Option B is incorrect because Turner syndrome specifically involves the loss of an X chromosome, not any chromosome. Option C incorrectly identifies Turner syndrome as a trisomy, which refers to the presence of an extra chromosome, such as in Down syndrome (trisomy 21).