Complex sentence: A Theta structure is an intermediate structure formed during the replication of a circular DNA molecule (prokaryote DNA), two replication forks can proceed independently around the DNA ring and when viewed from above it resembles the Greek letter "theta" (θ).
Split into simpler sentences: A Theta structure is an intermediate structure formed during the replication of a circular DNA molecule (prokaryote DNA). Two replication forks can proceed independently around the DNA ring and when viewed from above the structure resembles the Greek letter "theta" (θ).