The Formation of a Covalent Bond Between Two Adjacent Thymines

Question

The formation of a covalent bond between two adjacent thymines is caused by
A)mustard gas.
B)alkylating agents.
C)microwave radiation.
D)UV radiation.

Accepted Answer

The formation of a covalent bond between two adjacent thymines is caused by UV radiation. This type of covalent bond is known as a thymine dimer and it can lead to DNA damage and mutations. Mustard gas and alkylating agents are known to cause damage to DNA through different mechanisms and microwave radiation is not known to cause covalent bond formation between adjacent thymines.