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In down's syndrome (Mongolism), each cel...

In down's syndrome (Mongolism), each cell has how many chromosomes?

A

21 pair having one less

B

23 pair with one less

C

25

D

47

Text Solution

Verified by Experts

The correct Answer is:
D
In down's syndrome (mongolism),each cell has 47 chromosomes. It is due to trisomy 21(2n + 1) = 47
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  1. Sickle-cell anaemia is caused due to the substitution of :

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  2. Down's syndrome is an example

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  3. In down's syndrome (Mongolism), each cell has how many chromosomes?

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  4. In the given pedigree, the shaded individuals are homozygous recessive...

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  5. Haemophilia is related to

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  6. The gene of sickle cell anaemia is inherited by

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  7. Represented below is the inheritance pattern of a certain type of trai...

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  8. A normal - visioned man whose father was colourblind. Theiy have their...

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  9. A woman with albinic father marries an albinic man. The proportion of ...

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  10. Which following pair of diseases is caused by two genes located on hum...

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  11. If father shown normal gentype and mother shown a carrier trait for ha...

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  12. Cri-du-chat syndrome in humans is caused by the :

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  13. Colour blindness is caused due to

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  14. The chromosomal condition in Turner's syndrome is or A human female ...

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  15. A hereditary disease which is never passed on from father to son is :

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  16. Absence of one sex chromosome causes

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  17. More men suffer from colour blindess than women because

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  18. Which one of the following symbols and its representation, used in hu...

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

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  20. Haemophilia in man is due to

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