Mutagens: Agents of Genetic Mutation — NEET Biology
📚 Practice ConceptThe mechanism of mutation is beyond the scope of this discussion, at this level. However, there are many chemical and physical factors that induce mutations. These are referred to as mutagens. UV radiations can cause mutations in organisms – it is a mutagen.
Which of the following statements about mutation and mutagens are correct? S1: Mutation is a phenomenon which results in alteration of DNA sequences, leading to variation. S2: Deletions and insertions of base pairs of DNA can cause frame-shift mutations. S3: Chemical factors are the only agents that can induce mutations in organisms. S4: A point mutation is a change in a single base pair of DNA, as seen in sickle cell anemia. S5: X-rays are considered a type of physical mutagen.
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