\documentclass[fleqn]{beamer}
\usepackage[english]{babel}
\usepackage{amsmath,amssymb}
\usepackage{graphicx}
% vertical separator macro
\newcommand{\vsep}{
\column{0.0\textwidth}
\begin{tikzpicture}
\draw[very thick,black!10] (0,0) -- (0,7.3);
\end{tikzpicture}
}
% More space between lines in align
\setlength{\mathindent}{0pt}
% Beamer theme
\usetheme{ZMBZFMK}
\usefonttheme[onlysmall]{structurebold}
\mode<presentation>
\setbeamercovered{transparent=10}
% align spacing
\setlength{\jot}{0pt}
%\setbeamertemplate{navigation symbols}{}%remove navigation symbols
\title{Title of presentation}
\author{Max Musterman}
\institute[Zoological Research Museum Alexander Koenig]{ Head of the Section: XXX\\ Centre for Molecular Biology Research, }
\date{\today}
\begin{document}
\begin{frame}
\titlepage
\end{frame}
\begin{frame}
\frametitle{Slide 1}
\begin{columns}[T]
\column{0.5\textwidth}
Left column
\begin{itemize}
\item Item 1
\item Item 2
\item Item 3
\end{itemize}
\column{0.5\textwidth}
\begin{block}{Right Column}
this is a block
\end{block}
\end{columns}
\end{frame}
\begin{frame}
\frametitle{Slide 2}
erster Satz\\
zweiter Satz
\pause
dritter Satz
\end{frame}
\begin{frame}
\frametitle{Slide 3}
\uncover<1>{erster Satz}\\
\uncover<3>{zweiter Satz}\\
\uncover<2>{dritter Satz}
\end{frame}
\end{document}