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Direction: In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as :
Assertion (A) : Haemophilia is an autosomal disorder.
Reason (R) : A haemophilic father can never pass the gene for haemophilia to his son.
- a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).
- b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).
- c)Assertion (A) is true but reason (R) is false.
- d)Assertion (A) is false but reason (R) is true.
Correct answer is option 'D'. Can you explain this answer?
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Direction: In the following questions a statement of assertion (A) is...
Haemophilia is a sex-linked recessive disorder in which X-chromosome has the haemophilic gene. A haemophilic father can never pass the gene for haemophilia to his son.
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Direction: In the following questions a statement of assertion (A) is...
The correct answer is option (d) Assertion (A) is false but reason (R) is true.
Explanation:
Haemophilia is an X-linked recessive disorder, not an autosomal disorder. It is caused by a mutation in the gene responsible for producing blood clotting factors, specifically factors VIII or IX. Since this gene is located on the X chromosome, haemophilia is inherited in an X-linked manner.
In an X-linked recessive disorder like haemophilia, the gene mutation is located on the X chromosome. Males have one X and one Y chromosome, while females have two X chromosomes. If a male inherits the defective gene from his mother, he will have haemophilia because he only has one X chromosome and there is no corresponding normal gene to compensate for the mutation. On the other hand, females need to inherit two copies of the defective gene (one from each parent) to have haemophilia. If they only inherit one copy, they will be carriers of the disorder but will not exhibit symptoms.
Therefore, the statement of assertion (A) is false because haemophilia is not an autosomal disorder.
However, the statement of reason (R) is true. A haemophilic father can never pass the gene for haemophilia to his son. This is because a father can only pass his Y chromosome to his son, not his X chromosome. Since the gene mutation for haemophilia is located on the X chromosome, it is not possible for a father with haemophilia to pass the gene to his son. The son will receive his X chromosome from his mother, who may be a carrier of the gene but does not have haemophilia herself.
Explanation:
Haemophilia is an X-linked recessive disorder, not an autosomal disorder. It is caused by a mutation in the gene responsible for producing blood clotting factors, specifically factors VIII or IX. Since this gene is located on the X chromosome, haemophilia is inherited in an X-linked manner.
In an X-linked recessive disorder like haemophilia, the gene mutation is located on the X chromosome. Males have one X and one Y chromosome, while females have two X chromosomes. If a male inherits the defective gene from his mother, he will have haemophilia because he only has one X chromosome and there is no corresponding normal gene to compensate for the mutation. On the other hand, females need to inherit two copies of the defective gene (one from each parent) to have haemophilia. If they only inherit one copy, they will be carriers of the disorder but will not exhibit symptoms.
Therefore, the statement of assertion (A) is false because haemophilia is not an autosomal disorder.
However, the statement of reason (R) is true. A haemophilic father can never pass the gene for haemophilia to his son. This is because a father can only pass his Y chromosome to his son, not his X chromosome. Since the gene mutation for haemophilia is located on the X chromosome, it is not possible for a father with haemophilia to pass the gene to his son. The son will receive his X chromosome from his mother, who may be a carrier of the gene but does not have haemophilia herself.
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Direction: In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as :Assertion (A) : Haemophilia is an autosomal disorder.Reason (R) : A haemophilic father can never pass the gene for haemophilia to his son.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'D'. Can you explain this answer?
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Direction: In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as :Assertion (A) : Haemophilia is an autosomal disorder.Reason (R) : A haemophilic father can never pass the gene for haemophilia to his son.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'D'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Direction: In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as :Assertion (A) : Haemophilia is an autosomal disorder.Reason (R) : A haemophilic father can never pass the gene for haemophilia to his son.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Direction: In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as :Assertion (A) : Haemophilia is an autosomal disorder.Reason (R) : A haemophilic father can never pass the gene for haemophilia to his son.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'D'. Can you explain this answer?.
Direction: In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as :Assertion (A) : Haemophilia is an autosomal disorder.Reason (R) : A haemophilic father can never pass the gene for haemophilia to his son.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'D'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Direction: In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as :Assertion (A) : Haemophilia is an autosomal disorder.Reason (R) : A haemophilic father can never pass the gene for haemophilia to his son.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Direction: In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as :Assertion (A) : Haemophilia is an autosomal disorder.Reason (R) : A haemophilic father can never pass the gene for haemophilia to his son.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'D'. Can you explain this answer?.
Solutions for Direction: In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as :Assertion (A) : Haemophilia is an autosomal disorder.Reason (R) : A haemophilic father can never pass the gene for haemophilia to his son.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for NEET.
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Direction: In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as :Assertion (A) : Haemophilia is an autosomal disorder.Reason (R) : A haemophilic father can never pass the gene for haemophilia to his son.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'D'. Can you explain this answer?, a detailed solution for Direction: In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as :Assertion (A) : Haemophilia is an autosomal disorder.Reason (R) : A haemophilic father can never pass the gene for haemophilia to his son.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'D'. Can you explain this answer? has been provided alongside types of Direction: In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as :Assertion (A) : Haemophilia is an autosomal disorder.Reason (R) : A haemophilic father can never pass the gene for haemophilia to his son.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'D'. Can you explain this answer? theory, EduRev gives you an
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