Match the disease with its chromosomal abnormality.
-An additional chromosome joining the normal homologous pair

Question

Quizplus · Accepted Answer

Down syndrome is caused by an extra copy of chromosome 21, a condition known as trisomy 21.

Answer: B
 Klinefelter syndrome results from the presence of an extra X chromosome, leading to XXY instead of the usual XY male karyotype.

Answer: C
 Turner syndrome is caused by a complete or partial absence of the X chromosome in females, resulting in a karyotype of 45,X or 46,X, respectively.

Answer: D
 Cri du chat syndrome is caused by a deletion on the short arm of chromosome 5.

Match the Disease with Its Chromosomal Abnormality