- 1(current)
Q. No.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: Â Co-dominance |
 76%
From NCERT
NEET - 2020
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Which of the following characteristics represent the 'Inheritance of blood groups' in humans?
a. Dominance
b. Co-dominance
c. Multiple allelism
d. Incomplete dominance
e. Polygenic inheritance
| 1. | b, c, and e | 2. | a, b and c |
| 3. | b, d, and e | 4. | a, c, and e |
Subtopic: Â Co-dominance |
 59%
From NCERT
NEET - 2018
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh
The genotypes of a husband and wife are IAIB and IAi respectively. Among the blood types of their children, how many different genotypes and phenotypes are possible?
1. 3 genotypes; 4 phenotypes
2. 4 genotypes; 3 phenotypes
3. 4 genotypes; 4 phenotypes
4. 3 genotypes; 3 phenotypes
Subtopic: Â Co-dominance |
 74%
From NCERT
NEET - 2017
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NEET 2023 - Target Batch - Aryan Raj Singh
Hints
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NEET 2023 - Target Batch - Aryan Raj Singh
Match the terms in Column I with their description in Column II and choose the correct option.
| Column I | Column II | ||
| A. | Dominance | 1. | Many govern a single character |
| B. | Codominance | 2. | In a heterozygous organism, only one allele expresses itself |
| C. | Pleiotropy | 3. | In a heterozygous organism, both alleles express themselves fully |
| D. | Polygenic inheritance | 4. | A single gene influences many characters |
| A | B | C | D | |
| 1. | 2 | 3 | 4 | 1 |
| 2. | 4 | 1 | 2 | 3 |
| 3. | 4 | 3 | 1 | 2 |
| 4. | 2 | 1 | 4 | 3 |
Subtopic: Â Polygenic Inheritance & Pleiotropy |Â Co-dominance |
 91%
From NCERT
NEET - 2016
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh
- 1(current)
Q. No.
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