Principle Of Inheritance And Variation Question 371
Question: Which of the following is not a hereditary disease?
Options:
A) Cystic fibrosis
B) Thalassemia
C) Haemophilia
D) Cretinism
Show Answer
Answer:
Correct Answer: D
Solution:
[d] Cystic fibrosis: It is a common disorder Caucasian race in which thick and more salty mucus blocks the respiratory tract.
The homozygous recessive condition produces the defective protein which regulates chloride transport channel.
Cretinism: In this disorder, the physical growth, mental growth and sexual growth in children is retarded.
Such a dwarf and sterile child is called a cretin.
It is due to hyposecretion of thyroid hormones.
Thalassemia: Due to defective production of a or P chains haemoglobin, autosomal recessive.
Haemophilia: Sex linked disorder due to defective recessive gene.
BETA
