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How many statements are correct about ABO blood grouping 

  1. ABO blood grouping is an example of codominance.
  2. Chromosome number 9 has a gene l which controls ABO blood grouping in humans.
  3. There are 3 different types of alleles on gene l which control ABO blood group.
  4. In the ABO blood group, allele i does not produce any sugar.
  5. There are 4 genotypes in ABO blood grouping.
  6. In ABO blood grouping, A blood group is an example of codominance.
Option: 1

6


Option: 2

4


Option: 3

2


Option: 4

5


Answers (1)

best_answer

ABO blood grouping is an example of codominance. Codominance is the type of dominance where the offspring show similarity to both the parents and it is due to the blending of alleles.

Chromosome number 9 has a gene l which controls ABO blood grouping in humans.

There are 3 different types of alleles on gene l which control ABO blood group.

In the ABO blood group, allele i does not produce any sugar.

There are 6 genotypes in ABO blood grouping.

"AB blood group" shows codominance in the ABO blood group system.

Option 2 is the correct answer. 

Posted by

Divya Prakash Singh

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