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9. Consider the following DNA sequence 5’-ATGGGCATAGACGATATGGTAG-3’. Insertion of G between 3rd and 4th position lead to frameshift mutation and non-functional protein synthesis. Which intragenic suppressor mutation will have minimum […]

8. In a lac operon, a nonsense mutation in the gene encoding beta-galactosidase was found to interfere with the expression of downstream permease and transacetylase genes. Which one of the […]

7. An bacterial operon contains three structural genes A, B, and C in the same order. If polar mutation occurs in gene B, then the effect in protein would be […]

6. If mutation changes codon in such a way that there is no effect on functioning and sequence of protein. This type of mutation is termed as (1) Silent mutation        […]

5. If substitution is the only possible type of mutation, then which technique would be no more useful for detecting them? (1) DNA sequencing (2) PCR amplification (3) Database searching […]

4. The frame shift mutation is induced by- (1) Nitrous oxide      (2) Acradines (3) EMS                   (4) UV rays Frame shift mutations occur due to insertion or deletion of nucleotides not […]

3. Point mutation in which there is deletion or addition of one base pair is termed as (1) Deletion              (2) Transition (3) Transversion       (4) Frame shift mutation A point mutation […]

2. A single base pair mutation occurs in strand and mutant strand has a sequence CATTACCG, while its complementary strand has a sequence GTTATGGC. It means mutation has changed base […]

1. Which one of the following situations could be termed as intergenic suppression of a mutation in a coding sequence? (1) A nonsense mutation in the codon leading to lack […]