Which Syndrome is Characterized by a Karyotype with 45 Chromosomes

Question

Which syndrome is characterized by a karyotype with 45 chromosomes?  
A) Turner
B) Down
C) Androgen insensitivity
D) Klinefelter
E) Cri-du-chat

Accepted Answer

Turner syndrome is characterized by a karyotype with only one X chromosome and 45 total chromosomes. This results in various physical and developmental abnormalities. The other syndromes listed (Down, Androgen insensitivity, Klinefelter, and Cri-du-chat) have different karyotypes.