Match the cause with the disorder.
-Down syndrome
A)autosomal recessive inheritance resulting in abnormally low melanin levels
B)nondisjunction of the twenty-first chromosomal pair
C)X-linked recessive inheritance
D)nondisjunction of the sex chromosomes

Question

Quizplus · Accepted Answer

Down syndrome is caused by the nondisjunction of the twenty-first chromosomal pair, which results in an extra copy of chromosome 21.

Answer: A 
 Autosomal recessive inheritance resulting in abnormally low melanin levels is a cause of albinism.

Answer: D 
 Nondisjunction of the sex chromosomes can result in disorders such as Turner syndrome (only one X chromosome in females) or Klinefelter syndrome (an extra X chromosome in males).

Answer: C 
 X-linked recessive inheritance is a cause of disorders such as hemophilia and color blindness.

Match the Cause with the Disorder