Assertion(A): Human ABO blood grouping has six different genotypes.
Reason(R): ABO blood grouping involves four different alleles.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic:  Co-dominance |
 80%
Level 1: 80%+
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Assertion(A): The starch synthesis gene in its homozygous dominant state produces large starch grains.
Reason(R): The Dominant allele B makes a product for better efficiency in starch synthesis.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic:  Co-dominance |
 75%
Level 2: 60%+
Hints

Assertion(A): Dominance is an autonomous feature of a gene.
Reason(R): Dominance depends not only on gene product but also on the type of phenotype that we choose to examine.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic:  Co-dominance |
 59%
Level 3: 35%-60%
Hints

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