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Biomolecules question

2020 · Q75
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Biomolecules question

2020 · Q75

NEETBiologyBiomoleculesMCQ+4 / −1
Identify the wrong statement with reference to the gene ‘I’ that controls ABO blood groups.
  1. A
    Allele ‘i’ does not produce any sugar.
  2. B
    The gene (I) has three alleles.
  3. C
    When IA and IB are present together, they express same type of sugar.
  4. D
    A person will have only two of the three alleles.
View written solutionFree

Correct answer: C

When IA and IB are present together, they express same type of sugar is wrong statement with reference to the gene ‘I’ that controls ABO blood group because IA and IB are completely dominant over IO , but when IA and IB are present together, they both express their own types of sugar and thus behaving as codominant alleles.

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