Human Health And Disease Question 157
Question: Read the assertion and reason carefully to mark the correct option out of the options given below:
Assertion : Haemophilia is a congenital disease.
Reason : Haemophilia is caused by a gene mutation inherited from one’s parents.
Options:
A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion
B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion
C) If the assertion is true but the reason is false
D) If both the assertion and reason are false
Show Answer
Answer:
Correct Answer: C
Solution:
Haemophilia also known as ‘bleeder disease’. It is an example of recessive sex linked inheritance in human beings. It is not masked in heterozygous condition. The person suffering from disease lacks factors VIII and IX responsible for blood clotting. A small cut may lead to bleeding till death. Men are affected by this disease while women are the carriers. Mutation of a structural gene on chromosome number 15 causes Marfan syndrome. This disease results in formation of abnormal types of connective tissues and characteristic extreme looseness of joints. Thus, the correct answer is option C.
BETA
