Answer to Question #246421 in Human Anatomy and Physiology for Vee

Question

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2. A Mutation occurs when a DNA gene is damaged or changed in such a way as to alter the genetic message carried by that gene. A Mutagen is an agent of substance that can bring about a permanent alteration to the physical composition of a DNA gene such that the genetic message is changed. However, some mutations are spontaneous. Do the necessary research and discuss:

(i) What do we mean by mutations being spontaneous. (1)

(ii) Further discuss how the following can lead to mistakes at the time of DNA

replication (a) A base analogy (b) Nitric acid (c) UV light. (9)

(iii) Discuss the types of mutations under the following headings giving an example in each case: Silent Mutations, Non- Synonymous Mutations, Chromosomal mutations, and DNA Non-coding region Mutations (10)

Answer 1

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