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A, AB and B blood groups are formed in 1...

A, AB and B blood groups are formed in 1:2:1 ratio by

A

`I^(A)I^(B)xxI^(A)I^(B)`

B

`I^(A)I^(B)xxI^(A)I^(B)`

C

`I^(B)I^(O)xxI^(A)I^(B)`

D

All these

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The correct Answer is:
B
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Blood group AB has

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AB-Blood group shows :-

AAKASH SERIES-PRINCIPLES OF INHERITANCE AND VARIATION-EXERCISE-I
  1. The following blood group is called universal recipient

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  2. Each of the progeny have 25% chance of their blood group being O/A/B/A...

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  3. A, AB and B blood groups are formed in 1:2:1 ratio by

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  4. A couple has only A and O blood group children in 3:1 ratio if father'...

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  5. Genotype of A-group father of O-group child would be

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  6. A child of blood group O cannot have parents of blood groups

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  7. A gene influencing many traits is

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  8. Source of mendelian recombination is

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  9. Sickle cell anaemia is an example of

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  10. In a cross of four O'clock plants in the progeny half pink flower plan...

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  11. In pisum sativum pleiotropic factor influences

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  12. If a plant is heterozygous tall and produced tall as well as dwarf in ...

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  13. Which of the following depicts phenotypic ratio of dihybrid cross?

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  14. In a dihybrid cross the ratio of pure double dominants and pure double...

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  15. Number of kinds of genotypes in F(2) generation of mendel's dihybrid c...

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  16. Number of kinds of genotypes in F(2) generation of mendel's dihybrid c...

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  17. Number of kinds of phenotypes in F(2) generation of mendel's dihybrid ...

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  18. When true breeding pea plant with yellow cotyledons are round seeds is...

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  19. The number of kinds of gametes produced by a dihybrid is

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  20. In a typical dihybrid cross the F(2) phenotypic ratio is

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