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After the age of 40 , the percentage of ...

After the age of 40 , the percentage of syndrome increased in the offspring of a lady is due to

A

Lady becomes weak

B

Oocyte can show non-disjunction

C

Ovaries become weak

D

Placenta becomes weak

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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. Duchenne muscular dystrophy is caused by the presence of :

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  2. Parents with blood group O will have children with blood groups

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  3. After the age of 40 , the percentage of syndrome increased in the offs...

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  4. An abnormality in men who are always sterile due to improper developme...

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  5. Mental retardation is not related with

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  6. One way of determining sex-linked inheritance is :

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  7. A single recessive allele will produce its phenotypic effect when it ...

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  8. Dysgenics is the study of

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  9. Which of thefollowing is not a symptom of alkaptonuria?

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  10. The colour blindness is more likely to occur in males than in females ...

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  11. If both parents of a male child are normal,what are the chances of the...

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  12. This pedigree is of a rare trait, in which children have extra fingers...

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  13. Haemophilia is a condition where there is :

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  14. Haemophilic female marries normall male, the theoretical ratio of thei...

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  15. Which studying a human blood smear, it was noticed that several white ...

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  16. Edwrd's, patau's and down's syndrome are

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  17. Which is not an X- linked recessive disease?

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  18. Brachydactyly is due to:

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  19. Which of the following should be avoided in biological marriages ?

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  20. Sex -linked chromosomes of man are

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