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Usually the recessive character is expre...

Usually the recessive character is expresse only when present in a double recessive condition. However, a single recessive gene can express itlself in human beings when the gene is present on

A

The X-chromosome of the female

B

The X- chromosome of the male

C

Any autosome

D

Either an autosome or X-chromosome

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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 )
  1. Tay-sach's disease is due to

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  2. Baldness is more common in men than in women it could be explained on ...

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  3. Usually the recessive character is expresse only when present in a dou...

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  4. Individual with Turner's syndrome is

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  5. A man with a certain disease marries a normal woman. They have eight c...

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  6. The person with turner's syndrome has

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  7. When both parants are of blood type AB,they can have children with

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

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  9. A colourblind man marries a daughter of colourblind father, then in th...

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  10. Erythroblastosis foetalis occurs

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  11. In human red-green colour blindness is recessive and sex-linked, while...

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  12. Father has blood group A and mother's blood group is B. Both are hater...

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  13. A holandric gene is known for hypertrichosis (long hair on ears) When...

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  14. Find out the mismatch

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

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  16. A man with type A blood married a woman, who has type AB blood . We do...

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  17. A colourblind girl is rare and can be born when

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  18. The probability of either a male or a female child in a pregnancy is

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  19. Man is usually colourblind than woman because

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  20. In man, the machanism of sex-linked inheritance is generally from

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