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A married couple adopted a male child. A few years later, twin boys were born to them. The blood group of the couple is AB positive and O negative. The blood group of the three sons is A positive, B positive, and O positive. The blood group of the adopted son is?
- a)O positive.
- b)A positive.
- c)B positive.
- d)Cannot be determined on the basis of the given data.
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
A married couple adopted a male child. A few years later, twin boys we...
The correct option is A.
The blood group of the parents are AB and O; the child’s blood group may be A or B and since the boy is adopted it is given in the question that “ the blood group of the three sons are A+, B+, O+”.
The blood group of the parents are AB and O; the child’s blood group may be A or B and since the boy is adopted it is given in the question that “ the blood group of the three sons are A+, B+, O+”.
Most Upvoted Answer
A married couple adopted a male child. A few years later, twin boys we...
Explanation:
Blood groups are determined by the presence or absence of certain antigens on the surface of red blood cells. These antigens are inherited from our parents.
The blood group of the couple is AB positive and O negative.
This means that the father has blood group A or B and the mother has blood group AB.
The blood group of the three sons is A positive, B positive, and O positive.
From this, we can deduce the following:
- The father must have blood group B, as he has passed on the B antigen to his son with blood group B.
- The mother must have blood group A, as she has passed on the A antigen to her son with blood group A.
- The parents must both be carriers of the O antigen, as they have passed it on to their son with blood group O.
The blood group of the adopted son is O positive.
Since both parents are carriers of the O antigen, it is possible for them to have a child with blood group O. The adopted son could have inherited the O antigen from his biological parents, or he could have inherited it from one of his adoptive parents.
Therefore, the correct answer is option 'A' - the blood group of the adopted son is O positive.
Blood groups are determined by the presence or absence of certain antigens on the surface of red blood cells. These antigens are inherited from our parents.
The blood group of the couple is AB positive and O negative.
This means that the father has blood group A or B and the mother has blood group AB.
The blood group of the three sons is A positive, B positive, and O positive.
From this, we can deduce the following:
- The father must have blood group B, as he has passed on the B antigen to his son with blood group B.
- The mother must have blood group A, as she has passed on the A antigen to her son with blood group A.
- The parents must both be carriers of the O antigen, as they have passed it on to their son with blood group O.
The blood group of the adopted son is O positive.
Since both parents are carriers of the O antigen, it is possible for them to have a child with blood group O. The adopted son could have inherited the O antigen from his biological parents, or he could have inherited it from one of his adoptive parents.
Therefore, the correct answer is option 'A' - the blood group of the adopted son is O positive.
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A married couple adopted a male child. A few years later, twin boys we...
Though another blood group is o negative the twins have AandB positive respectively nd the adopted child have o positive
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A married couple adopted a male child. A few years later, twin boys were born to them. The blood group of the couple is AB positive and O negative. The blood group of the three sons is A positive, B positive, and O positive. The blood group of the adopted son is?a)O positive.b)A positive.c)B positive.d)Cannot be determined on the basis of the given data.Correct answer is option 'A'. Can you explain this answer? for UPSC 2026 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about A married couple adopted a male child. A few years later, twin boys were born to them. The blood group of the couple is AB positive and O negative. The blood group of the three sons is A positive, B positive, and O positive. The blood group of the adopted son is?a)O positive.b)A positive.c)B positive.d)Cannot be determined on the basis of the given data.Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for UPSC 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A married couple adopted a male child. A few years later, twin boys were born to them. The blood group of the couple is AB positive and O negative. The blood group of the three sons is A positive, B positive, and O positive. The blood group of the adopted son is?a)O positive.b)A positive.c)B positive.d)Cannot be determined on the basis of the given data.Correct answer is option 'A'. Can you explain this answer?.
A married couple adopted a male child. A few years later, twin boys were born to them. The blood group of the couple is AB positive and O negative. The blood group of the three sons is A positive, B positive, and O positive. The blood group of the adopted son is?a)O positive.b)A positive.c)B positive.d)Cannot be determined on the basis of the given data.Correct answer is option 'A'. Can you explain this answer? for UPSC 2026 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about A married couple adopted a male child. A few years later, twin boys were born to them. The blood group of the couple is AB positive and O negative. The blood group of the three sons is A positive, B positive, and O positive. The blood group of the adopted son is?a)O positive.b)A positive.c)B positive.d)Cannot be determined on the basis of the given data.Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for UPSC 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A married couple adopted a male child. A few years later, twin boys were born to them. The blood group of the couple is AB positive and O negative. The blood group of the three sons is A positive, B positive, and O positive. The blood group of the adopted son is?a)O positive.b)A positive.c)B positive.d)Cannot be determined on the basis of the given data.Correct answer is option 'A'. Can you explain this answer?.
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