A chemist synthesized three new chemical compounds, MI, M2 and M3. The compounds were tested for their mutagenic potential and were found to be highly mutagenic. Tests were made to […]
Blog
CSIR NET Life Science Previous Year Questions and Solution on Genetics
E. coli Mutation Question on EMS and Proflavin
Three met E. coli mutant strains were isolated. To study the nature of mutation these mutant strains were treated with mutagens EMS or proflavins and scored for revertants. The results […]
Education
Identifying Mutagen from Amino Acid Sequence Changes in Gene X Mutation
The following is the amino acid sequence of a part of a protein encoded by gene ‘X’ ….Phe Leu Val Pro Ser Tyr Cys…. A mutant for gene ‘X’ is […]
CSIR NET Life Science Previous Year Questions and Solution on Genetics
Mutations Statements
26. The following are some statements made regarding mutations: A. Change of DNA sequence from AGC to ATC in non- coding strand can have a major impact on the protein […]
CSIR NET Life Science Previous Year Questions and Solution on Genetics
Identifying the Glycine Codon from Mutational Pathways
25. A protein has Gly at position 28 (wild type). On mutagenesis, a point mutation leads to conversion of Gly to Arg at position 28 (mutant 1). When mutant 1 […]
CSIR NET Life Science Previous Year Questions and Solution on Genetics
Understanding the Mutation Type Induced by 2-Aminopurine Base Analog
24. The base analog 2-aminopurine pairs With thymine, and can occasionally pair with cytosine. The type of mutation induced by 2-aminopurine is (1) transversion (2) Transition. (3) deletion (4) nonsense. […]
CSIR NET Life Science Previous Year Questions and Solution on Genetics
Deamination of 5-Methylcytosine Produces Thymine
23. Dearnination of bases is a common chemical event that produces spontaneous mutation. Which one of the following bases will be formed by deamination of 5-methylcytosine? (1) Uracil (2) Thymine […]
CSIR NET Life Science Previous Year Questions and Solution on Genetics
2-Aminopurine Induces Mutation by Base Pair Change
22. 2- Aminopurine induces mutation by (1) Base pair change. (2) Frameshift (3) Duplication (4) Deletion 2-Aminopurine (2AP), an adenine base analog, primarily induces mutations through base pair changes, specifically […]
CSIR NET Life Science Previous Year Questions and Solution on Genetics
DNA Intercalator
21. Which one of the following chemicals is a DNA intercalator? (1) 5-Bromouracil (2) Ethyl methane sulfonate (3) Acridine orange (4) UV Acridine orange is the correct DNA intercalator among […]
CSIR NET Life Science Previous Year Questions and Solution on Genetics
5-Bromouracil Mutation
20. 5-Bromouracil is a base analog that can cause mutation when incorporated into DNA. Which of the following is the most likely change that 5-Bromouracil induces: (1) T:A to C:G […]
