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An example of the mutagenic effect of ultraviolet radiation (UV) on DNA is shown in the diagram - HSC - SSCE Biology - Question 15 - 2021 - Paper 1
Question 15
An example of the mutagenic effect of ultraviolet radiation (UV) on DNA is shown in the diagram. What is the mutagenic effect that is modelled? A. Thymine is dupli... show full transcript
Worked Solution & Example Answer:An example of the mutagenic effect of ultraviolet radiation (UV) on DNA is shown in the diagram - HSC - SSCE Biology - Question 15 - 2021 - Paper 1
Step 1
What is the mutagenic effect that is modelled?
Answer
The mutagenic effect demonstrated in the diagram is that thymines on the two strands of DNA form bonds. Ultraviolet radiation can cause adjacent thymine bases to link together, leading to the formation of thymine dimers. This can result in mutations during DNA replication, as the structure of the DNA is altered.