Replication of dna in a eukaryote occurs during which phase of the cell cycle?

Synthesis (S) phase

Explanation:

The cell cycle of eukaryotes comprises of four main phases:

G1: the cell becomes metabolically active and undergoes growth.

S: The DNA of the cell replicates at this stage and at the end, each chromosome will have two sister chromatids

G2: The replicated chromosomes are distributed to daughter cells. This phase is also a preparatory phase for mitosis

M: Eukaryotic cell separates the chromosomes into two identical sets in two nuclei. The process of nucleus division is called Karyokinesis. After this stage, the separation of cytoplasm, organelles called cytokinesis follows.

an active site is a region that is present on an enzyme where the reactants or the substrate molecules we can say bind and experience a chemical reaction. the substrate is basically a reactant whose concentration is changing and that is converting into a product after binding at the active site of an enzyme