Write the redox reaction that occurs in a Daniell cell.

(N/A) The redox reaction occurring in a Daniell cell involves the oxidation of zinc and the reduction of copper ions:
$Zn_{(s)} \rightarrow Zn^{2+}_{(aq)} + 2e^-$ (Oxidation half-reaction)
$Cu^{2+}_{(aq)} + 2e^- \rightarrow Cu_{(s)}$ (Reduction half-reaction)
Overall redox reaction:
$Zn_{(s)} + Cu^{2+}_{(aq)} \rightarrow Zn^{2+}_{(aq)} + Cu_{(s)}$