Steps of DNA Replication

Step 1: Recognition of Initiation-

• Replication begins at the points called origins of replication

• the 2 strands open at origins of replication forming y-shaped areas called replication forks

• new DNA strands grow at the forks

Step 2: Unwinding DNA-

• helicse (uncoiling of DNA)

• - Topoismerase(relieves the stress on DNA strands at replication forks)

Step 3: RNA Primer-

• Primase- attaches the primers to the DNA

Step 4: Elongation-

• 5’ to 3’

• Ligase (glues okazaki fragments tgt)

• Leading strands

Step 5: Proof Reading

• correct mistakes

• get rid of introns