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What will be expected blood groups in the off spring when there is a cross between AB blood group mother and heterozygous B blood group father?
  • a)
    25% AB, 25% A, 50%B
  • b)
    50% AB, 25% A, 25%B
  • c)
    25% AB, 50% O, 25%A
  • d)
    25% O, 25% A, 50%B
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
What will be expected blood groups in the off spring when there is a c...
AB blood group of mother have two alleles IA and IB. The heterozygous B blood group of father has alleles IB and i. The possible outcome are IA IB,IAi,IBIB and IBi. That form AB, A, B and B blood group respectively.
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Most Upvoted Answer
What will be expected blood groups in the off spring when there is a c...
Given;
Mother is with "AB" blood group....i.e. it means the genotypes are 'IAIB' ..
For "B" blood group genotypes are:-'IBIB'(homozygous condition);'IBIO'(Heterozygous condition)..
In question it is said that Father is with "B" heterozygous blood group...So;the genotypes are 'IBIO' ...
When cross is done between Mother with 'IAIB' & father with 'IBIO'..
the possible genotypes of the progeny are :-
'IAIB'(i.e."AB" blood group);'IAIO'(i.e."A" blood group);'IBIB'(i.e."B" blood group);'IBIO'(i.e."B" blood group)..
% of "AB" blood group=>1×100/4 =>25% of progeny with "AB" blood group..
% of "A" blood group=>1×100/4 =>25% of progeny with "A" blood group..
% of "B" blood group =>2×100/4 =>50% of progeny with "B" blood group....
Hence;option _'A'_holds true here...
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What will be expected blood groups in the off spring when there is a c...
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What will be expected blood groups in the off spring when there is a cross between AB blood group mother and heterozygous B blood group father?a)25% AB, 25% A, 50%Bb)50% AB, 25% A, 25%Bc)25% AB, 50% O, 25%Ad)25% O, 25% A, 50%BCorrect answer is option 'A'. Can you explain this answer?
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