The molecular effect of ultraviolet light is | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) Ultraviolet $(UV)$ radiation,particularly $UV-B$,has a high energy level that can be absorbed by the nitrogenous bases of $DNA$. When $DNA$ is exp

Vedclass · Accepted Answer

Formation of pyrimidine dimers

Vedclass · Answer

(C) Ultraviolet $(UV)$ radiation,particularly $UV-B$,has a high energy level that can be absorbed by the nitrogenous bases of $DNA$. When $DNA$ is exposed to $UV$ light,it causes the formation of covalent bonds between adjacent pyrimidine bases (specifically thymine or cytosine) on the same strand. This process is known as the formation of pyrimidine dimers. These dimers distort the $DNA$ helix,which can lead to errors during $DNA$ replication and transcription,potentially causing mutations or cell death.

The molecular effect of ultraviolet light is primarily mediated by:

Similar Questions

Nucleotides are linked by

Which nitrogenous base is $NOT$ present in $DNA$?

Provide definitions/explanations for the following terms: $Nucleosome$ and $Euchromatin$.

In $DNA$,uracil is replaced by

What is the number of uracil nitrogen bases in a $DNA$ fragment containing $8$ adenine bases?

Vedclass Test Series

Exam Paper Generator

Online Exam Module