When two adjacent bases in the same strand of DNA dimerize (form a covalent bond between them),what happens to the DNA?
A)the original strand of DNA now contains a new DNA sequence
B)the original strand of DNA is kinked, which prevents DNA polymerase from working properly
C)the original strand of DNA is methylated, which causes the bases to mismatch
D)the original strand of DNA is prevented from opening during replication, so this section of DNA will not be replicated
E)the original strand of DNA is unaffected, so no additional mutations arise

Question

When two adjacent bases in the same strand of DNA dimerize (form a covalent bond between them),what happens to the DNA?  
A)the original strand of DNA now contains a new DNA sequence
B)the original strand of DNA is kinked, which prevents DNA polymerase from working properly
C)the original strand of DNA is methylated, which causes the bases to mismatch
D)the original strand of DNA is prevented from opening during replication, so this section of DNA will not be replicated
E)the original strand of DNA is unaffected, so no additional mutations arise

Quizplus · Accepted Answer

When adjacent bases in the same strand form a covalent bond, it leads to a structural distortion in the DNA called a thymine dimer. This kink in the DNA helix can prevent DNA polymerase from reading and replicating the DNA properly, leading to mutations or errors in DNA replication.

When Two Adjacent Bases in the Same Strand of DNA