Mutation and Repair
Discuss the effects of 3 kinds of chemical mutagens and 3 kinds
of physical...
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Biology
Mutation and Repair
Discuss the effects of 3 kinds of chemical mutagens and 3 kindsof physical mutagens in Mutation and Repair
Complete the table below
Repair Mechanism
Damage being repaired
Key Enzymes/Proteins for Repair
Mechanism of Repair (key steps only)
Photoreactivation
Base Excision Repair
Mismatch repair
SOS repair
Answer & Explanation
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4.1 Ratings (554 Votes)
1 The three kinds of chemical mutagens are Reactive oxygen species Reactive forms of oxygen like superoxide radicals hydrogen peroxide etc are produced in the course of normal aerobic reactions These ROS bring about damage to the DNA like for example oxidation converts guanine to 8oxy 78dihydrodeoxyguanine that causes a transversion mutation Deaminating agents Nitrous acid changes adenine to hypoxanthine by causing induced mutagenesis This can lead to transition mutation Intercalating
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