Match the cause with the disorder.
-hemophilia A
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

Hemophilia A is caused by X-linked recessive inheritance, meaning the gene mutation causing the disorder is on the X chromosome. This means males are more commonly affected, as they only have one X chromosome.

Answer: A 
 The disorder caused by autosomal recessive inheritance resulting in abnormally low melanin levels is albinism.

Answer: B 
 Nondisjunction of the twenty-first chromosomal pair results in Down syndrome, which is characterized by intellectual disability and distinct facial features.

Answer: D 
 Nondisjunction of the sex chromosomes can result in disorders such as Turner syndrome (XO) or Klinefelter syndrome (XXY). These disorders can cause a range of physical and developmental symptoms.

Match the Cause with the Disorder