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Barr body in mammals represent...

Barr body in mammals represent

A

All the heterochromatin in female cells

B

One of the two X-chromosomes in somatc cells of females

C

All the heterochromatin in male and female cells

D

The Y-chromosome in somatic cells of male

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The correct Answer is:
D
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  1. Study the pedigree chart given below What does it show?

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

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  3. Barr body in mammals represent

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  4. This pedigree is of a rare trait, in which children have extra fingers...

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  5. Which of the following abnormalities, results from an unnatural presen...

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  6. The "cri-du-chat" syndrome is caused by change in chromosome structure...

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  7. The daughter born to haemophilic father and normal mother could be

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  8. XO-chromosomal abnormally in human beings causes

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  9. Which of these statement about Huntington's disease is true ?

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  10. Both husband and wife have normal vision though their father were colo...

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  11. Select the correct bases of DNA, RNA and amino acid of beta chain resu...

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  12. Pic out the correct stataments (I) Haemophilia is a sex-linked rece...

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  13. The genetic defficiency of ADH - receptor leads to

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  14. Which of the following is not related to sex chromosome-X or Y?

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  15. A woman has a haemophilic son and three normal children . Her genotype...

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  16. In the above pedigree, assume that no outsider marrying in, carry a di...

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  17. A marriage between normal visioned man and colour blind woman will pr...

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  18. Sickle cell anamia has not been eleiminated from African polulation as

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  19. Which of these is not a Mendian disorder ?

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  20. Gene for colour blindness is located on:

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