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The alteration in chromosomes results du...

The alteration in chromosomes results due to

A

Loss of a segment of DNA

B

Gain of a segment of DNA

C

Both (a) and (b)

D

None of the above

Text Solution

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The correct Answer is:
C
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Assertion: Alteration in chromosomes results in abnormalities or aberrations Reason : Genes are known to be located on chromosomes.

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ARIHANT NEET-CHROMOSOMAL BASIS OF INHERITANCE-Chapter Exercises A Taking it together (Assorted Questions of the Chapter for Advanced level Practice )
  1. Choose the incorrect statement regarding deletions.

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  2. Chromosomal aberrations ae commonly observed in

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  3. The alteration in chromosomes results due to

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  4. All genes located on the same chromosome:-

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  5. The reason why some mutations which are harmful do not get eliminated ...

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  6. When two genetic loci produce identical phenotypes in cis as well as i...

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  7. The first known allotetraploid reported by Russian geneticist Karpeche...

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  8. Which of the following would be likely to suffer the greatest genetic ...

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  9. In a cross between genotype Ab and ++, 1700 out of 2000 individuals we...

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  10. If the mutation rate of a certain gene is directly proportional to the...

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  11. In multi-factorial inheritance

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  12. Sutton and Boveri argued that the pairing and separation of a pair of ...

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  13. Which of the following statements is correct about Drosophila melanoga...

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  14. Morgan caried out several crosses in Drosophila to study genes that we...

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  15. Morgan observed that the two genes

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  16. Morgan coined the term linkage to describe

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  17. Recombination describes

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  18. Alfred sturtevant to measure the distance between genes and mapped the...

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  19. The genetic maps are used as a starting point in the sequencing of who...

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  20. X-chromosome is designated as sex chromosome due to its involvement in

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