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Genetics and Genomics

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Damaging Effect of UV Light on DNA Strands

GENES-SQZ62Y

UV light causes the formation of pyrimidine dimers in DNA.

Effect of UV Light on DNA Sequence "Pyrimidine Dimer." Wikipedia. Wikimedia Foundation, n.d. Web. 29 Mar. 2016. https://en.wikipedia.org/wiki/Pyrimidine_dimer.

This process involves photons of light striking the DNA in a particular location where two pyrimidine nucleotides lie

A

across from each other, forming a new hydrogen bond between the DNA strands.

B

adjacent to each other on opposite strands of the DNA, breaking the hydrogen bonds and leaving each pyrimidine unattached.

C

adjacent to each other on the same strand of DNA, breaking the hydrogen bonds and leaving each pyrimidine unattached.

D

adjacent to each other on the same strand of DNA, breaking the hydrogen bonds and forming a new bond between the two adjacent pyrimidines.