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Down's syndrome is an example...

Down's syndrome is an example

A

Aneuploidy of sex chromosome

B

Aneuploidy of autosome

C

Syndrome caused due to gene mutation

D

Loss of one sex chromosome from the diploid sel

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Verified by Experts

The correct Answer is:
B
Down's syndrome is an example for aneuploidy of autosome was described by Langdon Down (1866) It occurs due to the additional copy of chromosome number 21 or trisomy of chromosome 21
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ARIHANT NEET-HUMAN GENETICS-Chapter Exercise (c) Medical entrances gallery (Collection of questions asked in NEET & Various Medical Entrance Exams)
  1. In alpha thalasssemia the gene HBAI is located on chromosome

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  2. Sickle-cell anaemia is caused due to the substitution of :

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  3. Down's syndrome is an example

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

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

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  6. Haemophilia is related to

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  7. The gene of sickle cell anaemia is inherited by

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

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

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

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

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

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

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  14. Colour blindness is caused due to

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

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

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  17. Absence of one sex chromosome causes

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  18. More men suffer from colour blindess than women because

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

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

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