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Replacement of purrine base by another ...

Replacement of purrine base by another purine base is called :

A

somatic mutation

B

addition mutation

C

Deletion mutation

D

substition mutation

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The correct Answer is:
D
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A mutation which subsiitutes one purine base with another purine base is called :

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Substitution of a purine base with a pyrimidine base or vice versa is called

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Which of the following statements are correct? I. Point mutations involve deletion of a part of chromosome. II.When a purine base is replaced by another purine and pyrimidine by another pyrimidine, it is transition. III.In frameshift mutations, one nitrogenous base is substituted by other. IV.When a purine is replaced by a pyrimidine and vice-versa, it is called transversion.

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GRB PUBLICATION-CHROMOSOMAL BASIS OF INHERITANCE-Gene mutation
  1. Dithyl sulphate (DES) is used as:

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  2. If the DNA condons are ATG ATG ATG and a cytosine base is inserted at...

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  3. Replacement of purrine base by another purine base is called :

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  4. In transversion :

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  5. which of the following will causes a more effecticve muta -tion ?

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  6. Frameshift mutation occurs when :

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  7. A segment of DNA has a base sequence AAG GAG GAC CAA CCA, which of th...

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  8. A mutation that change a codon specifying one amino acid to a terminat...

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  9. A nonsence mutation result in :

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  10. which of the following mutagens increases disture between the neighbou...

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  11. In a mutational event ,when adenine is replaced by guanine , it is a c...

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  12. trananstion type of mutation is cused when :

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  13. a point mutation comprising the subxiton of a purine by pyrimidine is ...

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  14. type of gene mutation which involves replacement of puriune with pyrim...

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  15. Change from purine to pyrimidedine or pyrimidine to purine is called :

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  16. Not all base -pair subsittuations in DNA alter the activity of the pro...

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  17. Minor change at a gene level are descibed as :

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  18. Mutation is the change in :

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  19. The gene that controls the rate of mutation of another gene is :

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  20. The gene which increases the frequncy of mutation in other gene is r...

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