Q.In Turner Syndrome which type of sex chromosomal pattern is seen?

Turner syndrome results from monosomy of the X chromosome, giving a 45,X (XO) karyotype.

Turner syndrome arises due to non-disjunction of the X chromosome during gamete formation, resulting in an individual with only a single X chromosome - karyotype 45, X0 (44 autosomes + one X, total 45 chromosomes) - instead of the normal 46 (44+XX).

Features include: female phenotype but sterile (rudimentary/streak ovaries), short stature, webbed neck, shield-shaped chest, and underdeveloped secondary sexual characters.

…