Evolutionary Algorithm flowchart LaTeX tikz

ea.tex

\begin{figure}[h]
\centering
\captionsetup{justification=centering}
\begin{tikzpicture}[node distance = 4cm]
    \node [frame] (pop) {Population};
    \node [above=2cm, left of=pop] (init) {Initialisation};
    \node [below=2cm, left of=pop] (term) {Termination};
    \node [frame, above=2cm, right of=pop] (parents)  {Parents};
    \node [frame, below=2cm, right of=pop] (off)  {Offspring};
    
    \path [line] (parents)
     -- node[right,align=left,pos=.5] {Crossover\\[3mm]Mutation}
     (off);
    \path [line] (init) |- (pop.170);
    \path [line] (pop.190) -| (term);
    \path [line] (off) -| node[below,pos=.25, align=center] {Survivor\\ selection}(pop);
    \path [line] (pop) |- node[above,pos=.75, align=center] {Parent\\ selection}(parents);
    \end{tikzpicture}
\caption{Flowchart of the general process of an Evolutionary Algorithm.}
\label{ea_flowchart}
\end{figure}