Question
Biology Question on the molecular basis of inheritance
During DNA replication, the strands separate by
A
DNA polymerase
B
topoisomerase
C
unwindase/helicase
D
gyrase
Answer
unwindase/helicase
Explanation
Solution
During DNA replication, the DNAopens up, and strands separate by unwindase/helicase. This is done to allow for transcriptionas well as replication of our DNA.
- The molecule is unwound by DNA unwinding proteinsknown as helicases.
- A DNA helicase or 'Unwindase' is an enzymethat melts the hydrogen bonds to hold the DNA in the double helix structure.
- The helicases II and III get attached to the logging strand and protein is attached to the leading strand.
- The formation of bands is avoided by SSB or single stranded DNA binding proteins.
So, the correct option is 'unwindase/Helicase'.