Syndrome which is characterized by 2X chromosomes and 1Y chromosome is:
(A) Kleinfelter syndrome (B) Down syndrome (C) Turner syndrome (D) Marfan syndrome
(A) Klinefelter’s syndrome is associated with an extra X chromosome (47, XXY).
Mohan H. Textbook of pathology. Jaypee Brothers Medical Publishers; 2015. Edition 7. Page 198