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Application of non-ionizing ultraviolet radiation causes _________(a) formation of pyrimidine dimers(b) deletion of pyrimidine bases(c) formation of methyl guanine(d) formation of methyl thymineThe question was asked in my homework.My question is taken from Genes, Chromosomes and Genomes in division Bioenergetics, Enzymes, Metabolism, Genes, Chromosomes and Genomes of Cell Biology

Answer»

Right option is (a) formation of pyrimidine dimers

The explanation: During APPLICATION of UV rays, as PHOTONS are absorbed by DNA molecules, an excited state is produced which allows for the REARRANGEMENT of electrons resulting in the formation of photoproducts.These photoproducts are CYCLOBUTANE pyrimidine dimer (CPD) and 6-4 pyrimidine –pyrimidone, both of which are pyrimidine dimers.



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