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Sita and Ram have their first child .Sit...

Sita and Ram have their first child .Sita knows her blood type is A, but ram does not known his blood type. However, Ram knows that both his mother and father have type B blood. The first child is boy named kush. Kush has type O blood. Sita and ram do not understand how this happened . Which of the following is the best explanation?

A

Sita's genotype is AA and Ram's genotype is OO,thus, skip expresses the O phenotype

B

Sita's genotype is AO and Ram's genotype is OO, thus, skip expresses the O phenotype

C

Because Ram's parents are both type B, Ram is not Khus's father

D

Khus's blood type will need to be checked after his first month of life, If sita and ram want to known his blood type, as it takes about a month for the blood type to develop in a newborn child

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The correct Answer is:
B
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ARIHANT NEET-HUMAN GENETICS-Chapter Exercises A Taking it together (Assorted Questions of the Chapter for Advanced level Practice )
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  2. Mr phillips is colourblind. What is the probability of his male child ...

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  3. How can a female be colour blind ?

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  4. If a normal woman marries a colour blind man :

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  5. What are all the chances of colour blind daughter and sons being born ...

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  6. Which one of the following conditions in humans is correctly matched ...

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  7. A man of blood group 'A' marries a woman of blood group 'B' ,both of t...

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  8. A mother with B blood group has two children, one with A blood group a...

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  9. A man known to be victim of haemophilia marries a normal woman whose f...

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  10. A couple got their first daughter quite normal , but the mother was un...

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  11. If a boy's father has haemophilia and his mother has one gene for haem...

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  12. Mary' s father has haemophilia and her husband is also haemophilic. W...

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  13. What are the chances that sons of a man with a rare X-linked disorder...

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  14. One of the following is a mismatch

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  15. Parents are colourblind. What is the phenotype of grandsons in f2-gene...

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  16. A woman with straight hair marries a man with curly hair and who is kn...

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  17. In man ,which of the following genotypes and phenotypes may be the cor...

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  18. What will be the phenotypic sex of the following organisms on the basi...

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  19. In recent years,nucleotidesequence of DNA and Y-chromosome were consid...

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  20. Sita and Ram have their first child .Sita knows her blood type is A, b...

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