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A recessive gene expresses only in homoz...

A recessive gene expresses only in homozygous condition. Some times, a single recessive gene can express itself when it is

A

autosomal gene

B

located on Xchromosome of female

C

located on X-chromosome of male

D

all of the above

Text Solution

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The correct Answer is:
C
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TRUEMAN BIOLOGY-PRINCIPLES OF INHERITANCE AND VARIATIONS -MCQs
  1. A normal woman whose father was haemophilic (X^(h)Y) marries a normal ...

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  2. A woman (whose father is colour bling but mother is normal) marries a ...

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  3. A recessive gene expresses only in homozygous condition. Some times, a...

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  4. Of a normal couple, half of sons are haemophilic and half the daughter...

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  5. A holandric gene in man causes hypertrichosis. When a man with hairy e...

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  6. A colour blind girl can be born when

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  7. A colour blind man marries the daughter of a colour blind lady and a n...

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  8. Both father and mother have allele for PKU but are phenotypically norm...

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  9. A cross of white eyed female and red eyed male drosophila gives red ey...

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  10. If husband and wife both are normal in vision but fathers of both were...

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  11. What will you call this set up 2n-2+2?

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  12. How many barr bodies Klinefelter syndrome (XXY) has?

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  13. Which of the following does not undergo transcription of its genes?

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  14. Turner syndrome is caused by

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  15. Down's syndrome or Mongoloid idiocy (Mongolism) is due to

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  16. Phenylketonuria, Huntington's disease and sickle-cell anaemia are caus...

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  17. Genetic constitution of Klinefelter syndrome is

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  18. Which one of the following conditions through harmful in itself, is al...

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  19. Genetic constitution of superfemale is

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  20. In human beings, male is 44A+XY and female 44A+XX. Which of the follow...

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