Why Do Eukaryotic Cells Use Multiple Replication Forks

Also, eukaryotic DNA replication is initiated by forming many replication forks at multiple origins to complete DNA replication in the time available during the S phase of a cell cycle. … Despite the dense packing of DNA in chromosomes, it must be accessible to regulatory proteins during replication and gene expression.

Why do eukaryotes have multiple replication forks?

As the DNA opens up, two Y-shaped structures called replication forks are formed. … Because eukaryotic chromosomes are linear and much larger than prokaryotic ones, there are multiple origins of replication in the eukaryotic genome during replication.

Do eukaryotes have more replication forks?

Both eukaryotic and prokaryotic DNA polymerases build off RNA primers made by primase. Eukaryotic DNA replication requires multiple replication forks, while prokaryotic replication uses a single origin to rapidly replicate the entire genome.