Question

Turner syndrome, short and webbed neck, low-set ears, low hairline at the back of the neck, short stature, and swollen hands and feet are seen at birth.

a) True
b) False

Answer 1

The XXY genotype corresponds to Klinefelter syndrome, not Turner syndrome. The statement regarding the physical manifestations of Turner syndrome described in the question is true. Turner syndrome is characterized by an XO genotype.

Step-by-step explanation:

The correct answer to the question about what the genotype XXY corresponds to is Klinefelter syndrome. Therefore, the first statement about Turner syndrome being associated with a short and webbed neck, low-set ears, low hairline at the back of the neck, short stature, and swollen hands and feet seen at birth is True. Turner syndrome is characterized by an XO genotype, indicating the presence of only one X chromosome, which leads to the phenotypical female traits that include many physical manifestations mentioned in the question. Meanwhile, Klinefelter syndrome, indicated by the presence of an extra X chromosome as in the XXY genotype, is distinct and affects phenotypical males with characteristics such as small testes, enlarged breasts, and reduced body hair.