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If a colourblind woman marries and a nor...

If a colourblind woman marries and a normal visioned man, their sons will be

A

Three-fourths colourblind and on-fourth normal

B

All colourblind

C

All normal visioned

D

One-half colourblind and one-half normal

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The correct Answer is:
B
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ERRORLESS -PRINCIPLES OF INHERITANCE AND VARIATION-Principles Of Inheritance And Variation
  1. Which of the following diseases belongs to the same category as colour...

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  2. X-linked recessive gene is

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  3. If a colourblind woman marries and a normal visioned man, their sons w...

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

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  5. In the following human pedigree, the filled symbols represent the affe...

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  6. Given below is a pedigree chart showing the inheritance of a certain s...

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  7. Which of the following statement about colour blindness is correct

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  8. Sex linked disease is

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  9. A woman with normal vision, but whose father was colour blind, marries...

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  10. A man and a woman, who do not show any apparent signs of a certain inh...

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  11. Which of the following is not a hereditary disease

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

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  13. A colour blind man marries a woman with normal sight who has no histor...

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  14. Sickle cell anaemia is due to

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  15. Sex linked inheritance was discovered by

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  16. Colour blindness is caused by a single

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  17. The following is a pedigree chart of a family with five children. It s...

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  18. Female rarely experience the physiologic defect of haemophilia because...

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  19. A colour blind son will born when

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  20. Sex influenced characters are due to

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