As per \(\mathrm{ABO}\) blood grouping system, the blood group of father is \(\mathrm{B^+}\), mother is \(\mathrm{A^+}\) and child is \(\mathrm{O^+}\). Their respective genotype can be 
A. \(\mathrm{I^{B}i / I^{A}i / ii}\)
B. \(\mathrm{I}^{\mathrm{B}} \mathrm{I}^{\mathrm{B}} / \mathrm{I}^{\mathrm{A}} \mathrm{I}^{\mathrm{A}} / \mathrm{ii}\)
C. \(\mathrm{I^AI^B/iI^A/I^Bi}\)
D. \(\mathrm{I^{A}i / I^{B}i / I^{A}i}\)
E. \(\mathrm{i I^B / i I^A / I^A I^B}\)
Choose the most appropriate answer from the options given below: 
1. B only 
2. C & B only 
3. D & E only 
4. A only 
Subtopic:  Co-dominance |
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NEET - 2024
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ABO blood group is an example of 
1. Incomplete dominance
2. Multiple allele
3. Pleiotropy
4. Linkage
Subtopic:  Co-dominance |
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NEET - 2024
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List-I
Types of inheritance
List-II
Example
A. Incomplete dominance I. Blood groups in human 
B. Co-dominance II. Flower colour in Antirrhinum
C. Pleiotropy III. Skin colour in human 
D. Polygenic inheritance IV. Phenylketonuria
Choose the correct answer from the options given below:
1. A-III,B-IV, C-II, D-I
2. A-II, B-I, C-IV, D-III
3. A-II,B-III, C-I, D-IV
4. A-IV, B-I, C-III, D-II
Subtopic:  Monohybrid Cross: 1 | Monohybrid Cross: Further Understanding | Polygenic Inheritance & Pleiotropy | Co-dominance |
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The mother has A+ blood group, the father has B+ and the child is A+. What can be possible genotypes of all three, respectively?
A. IAIA | IBi | IBi
B. IAIA | IBi | IAi
C. IB IA IA| IA IB
D. IAIA | IBIB | IAi
E. IA | IBi | IAi

Choose the correct answer from the options given below:
1. C and D
2. D and A
3. A and B
4. B and E
Subtopic:  Co-dominance |
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Identify the wrong statement with reference to the gene 'I' that controls ABO blood groups.

1. A person will have only two of the 3 alleles.
2. When IA and IB are present together, they express same type of sugar.
3. Allele 'i' does not produce any sugar.
4. The gene (I) has three alleles. 

Subtopic:  Co-dominance |
 76%
From NCERT
NEET - 2020
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