Question

describe the development of an individual with that condition from the point of an undifferentiated embryo through birth and following puberty of : Turner Syndrome (45, XO) in XO individual (compare with typical XX)

Answer 1

Turner syndrome : seen in females where there is partial or complete loss of x chromosome leading to Turner syndrome (45,XO)

Condition before birth :

During meiosis due to non-disjunction , one gamete has both XX and other gamete have XO condition due to improper disjunction . where the this gamete will fertilize it leads to monosomy of the chromosome . The signs and symtoms are arm that turn outward at elbow , high and very narrow palate , low set of ear lobes are seen

Condition in puberty :

Females are usually sterile because of lack of X chromosome , abnormal cardiovascular problems seen , webbing of neck , short stature , hypogonadism are seen in females compared to normal females