Question

Identify the correct phenotype of XXX, XXY, XYY, and XO, respectively:

a) Klinefelter syndrome, Turner syndrome, Triple X syndrome, Androgen Insensitivity Syndrome
b) Down syndrome, Edwards syndrome, Patau syndrome, Triple X syndrome
c) Huntington's disease, Marfan syndrome, Cri-du-chat syndrome, Turner syndrome
d) Fragile X syndrome, Cri-du-chat syndrome, Prader-Willi syndrome, Klinefelter syndrome

Answer 1

The correct phenotypes are Triple X syndrome for XXX, Klinefelter syndrome for XXY, Jacob syndrome for XYY, and Turner syndrome for XO. Each syndrome has distinct physical and developmental characteristics associated with it.

Step-by-step explanation:

The correct phenotypes for the genotypes XXX, XXY, XYY, and XO are Triple X syndrome, Klinefelter syndrome, Jacob syndrome, and Turner syndrome, respectively.

• Individuals with Triple X syndrome (XXX) are phenotypically female with developmental delays and reduced fertility.
• Klinefelter syndrome (XXY) affects males who often have features like small testes, enlarged breasts, and reduced body hair.
• Jacob syndrome (XYY) typically does not show any distinctive physical traits and may go undiagnosed, but can sometimes be associated with tall stature and behavioral issues.
• Patients with Turner syndrome (XO) are phenotypically female with a short stature, webbed neck, and cardiac impairments, among other symptoms.