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A normal visioned man, whose father was ...

A normal visioned man, whose father was colourblind, marries a woman those father was also colourblind. They have their first child as a daughter. What are the chances that this child would be colurblind ?

A

`100^@`

B

`0^@`

C

`25^@`

D

`50^@`

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MODERN PUBLICATION-SEX DETERMINATION-EXERCISE
  1. Edward's Patau's Down's syndrome are due to :

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  2. If a colourblind woman marries a normal visioned man, their sons will ...

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  3. A normal visioned man, whose father was colourblind, marries a woman t...

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  4. A man, whose father was colourblind, marries a women who had a colourb...

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  5. A colourblind man marries a woman with normal sight who has no history...

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  6. Which of the following most appropriately describes haemophilia ?

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  7. A disease caused by autosomal primary non-disjunction is :

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  8. X and Y- chromosomes are called :

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  9. Which one is a sex-linked disorder?

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  10. A haemophilic man marries a normal homozygous woman. What is the proba...

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  11. A fruitfly exhibiting both male and female trait is

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  12. A haemophilic man marries a normal homozygous woman. What is the proba...

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  13. Genes located on Y-chromosome are

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  14. A colourblind person cannot distinguish

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  15. Which chromosome carries the haemophilic genes ?

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  16. Red-green colour blindness in man is.

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  17. Sex-linked characters are

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  18. Which gene is present in the Y-chromosome that codes for the protein T...

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  19. What type of sex determination seen in birds ?

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  20. When the ratio of X/A=0.67 in genic balance theory, which type of sex ...

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