Graphics, Figures & Tables ⇒ create a convergent hierarchy

[waterinus]

Dear fellows,
I'm trying to use this code to create a convergent hierarchy, but I'm not sure how to "converge" A6. I want both A4 and A5 point to A6.
Thank you so much, and please let me know if you need additional information
Walter

Code: Select all

\begin{center}
\begin{tikzpicture}[every tree node/.style={draw,circle},
   level distance=2cm,sibling distance=1cm, 
   edge from parent/.style={thick,draw=black!70,-latex},
   edge from parent path={(\tikzparentnode) -- (\tikzchildnode)}]
\Tree [.\node {A1}; 
    [.A2   [.A3 
    [.A4  [.A6 ]] 
    [.A5  [.A6 ] ]]]]
     
    
  ]
\end{tikzpicture}
\end{center}

[waterinus]

Code: Select all

\documentclass[12pt]{article} 
\usepackage{tikz-qtree}
\begin{document}
\begin{center}
\begin{tikzpicture}[every tree node/.style={draw,circle},
   level distance=2cm,sibling distance=1cm, 
   edge from parent/.style={thick,draw=black!70,-latex},
   edge from parent path={(\tikzparentnode) -- (\tikzchildnode)}]
\Tree [.\node {A1}; 
    [.A2   [.A3 
    [.A4  [.A6 ]] 
    [.A5  [.A6 ] ]]]]
     
    
  ]
\end{tikzpicture}
\end{center}
\end{document}

[waterinus]

please help!