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ABO blood grouping in human beings cites...

ABO blood grouping in human beings cites the example of

A

incomplete dominance

B

co-dominance

C

multiple allelism

D

both (b) and (c)

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The correct Answer is:
D
ABO blood group system in human beings is an example of codominance and multiple alleles. Codominance is a phenomenon in which alleles which do not show dominance recessive relationship are able to express themselves independently when present together.
More than two alternate forms of a gene present on the same locus are called as multiple alleles and the mode of inheritance in these alleles is called as multiple allelism. Human beings have six genotypes and four blood group phenotypes -A,B, AB and O.
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Assertion (A) : ABO blood group in human being is an example of multiple allelism. Reason ( R): It has three alleles for the gene 1 i.e. I_(A),I_(B),i .

The gene I that controls the ABO blood grouping in human beings has three alleles IA. IB and i (a) How many different genotypes are Likely to be present in human population? (b) Also, how many phenotypes are possibly present?

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A,B,O blood grouping in human beings is based on………….

ABO blood grouping in humans in an example of

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The gene that controls the ABO blood group system in human beings has three alleles -I^(A),I^(B) and i. A child has blood group O. His father has blood group A and mother has blood group B. Genotypes of other off springs can be: i. I^(B)I^(B) ii. I^(A)i iii. I^(B)i iv. I^(A)I^(B) v. ii

The gene that controls the ABO blood group system in human beings has three alleles- I^(A), I^(B) and i. A child has blood group O. His father has blood group A and mother has blood group (B) Genotypes of other off springs can be: (I) I^(B)I^(B) (II) I^(A)i (III) I^(B)i (IV) I^(A)I^(B) (V) ii

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