Did the Morse code use dots and dashes to send messages over wires?

Actually Morse's original code used dots, dashes, long dashes, and very long dashes. It also used 5 different lengths of gaps.

This was greatly simplified by the adoption of the International Morse Code (largely developed in Germany then modified a bit by international agreements) to just dots and dashes. The number of different length gaps was also reduced to only 3.