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Chromosome number in down's syndroom is...

Chromosome number in down's syndroom is

A

46

B

47

C

23

D

45

Text Solution

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The correct Answer is:
A
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Chromosomes number is

Chromosome number of Down syndrome is :

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Consider the following abnormalities due to changes in sex chromosome number (I) Turner's syndrome (II) Klinefelter's syndrome (III) Cri-du-chat syndrome (IV) Down's syndrome

Trisomy of which chromosome is involved in Down's syndrome.

Chromosome number is restored by

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Chromosome number is halved during

Diploid chromosome number in humans is :

ARIHANT NEET-HUMAN GENETICS-Chapter Exercises A Taking it together (Assorted Questions of the Chapter for Advanced level Practice )
  1. In which blood group,antibodies are absent ?

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  2. Agglitinogens A and B are found in Platelets

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  3. Chromosome number in down's syndroom is

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  4. Which of the following is related to the high frequency of Down syndro...

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  5. Epicanthus' is the symptom of

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  6. Any change in sex chromosome constitution is not involved in :

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  7. In most animals,sex of the offspring is established during :

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  8. The male child is born when sperm with,

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  9. XY sex chromosomes were discovered by :

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  10. From the pedigree of a family given below, it is clear that trait is i...

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  11. Haploids are used for research because

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  12. The ezyme which changes amino acid phenylalanine to amino acid tyrosi...

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  13. If a genetic disease is transferred from a phenotypically normal but c...

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  14. Male XX and female XY develop sometimes due to

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  15. Turner's syndrome is due to

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  16. The enzyme tyrosinase is essential for the synthesis of pigment

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  17. Marriage between close relatives should be avoided because it induces...

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  18. Tay -sachs disease is an example of :

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  19. All the following traits are X-linked except:

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  20. A child of 10 yrs is a intelligent as is normally expected in the chil...

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