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Explain the genetic basis of blood grouping in human population. - Biology

Explain the genetic basis of blood grouping in human population.

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Solution

In humans, the blood groups are controlled by a gene called gene ‘I’. It has three alleles, namely IA, IBand i.

Table Showing the Genetic Basis of Blood Grouping in Human Population

Allele from Parent 1

Allele from Parent 2

Genotype of Offspring

Blood-types of Offspring

IA

IA

IA IA

A

IA

IB

IA IB

AB

IA

i

IA i

A

IB

IA

IA IB

AB

IB

IB

IB IB

B

IB

i

IB i

B

i

i

i i

O

Concept: Deviations from Mendelism - Incomplete Dominance, Co-dominance, Multiple Alleles and Inheritance of Blood Groups, Pleiotropy
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