  There suggested a modification of the Dirac electron theory, eliminating its
mathematical incompleteness. The modified Dirac electron, called dual, is
described by two waves, one of which is the Dirac wave and the second
dynamically restores the symmetry unused in the Dirac theory of the Dirac
equation. There has been produced a set of the conserved currents which are
generated by equations of the dual electron. It is shown that, although, it
consists of the vector, axial and left currents, nevertheless, it has mirror
symmetry. It is also shown that if the observed electron follows the dual
electron equations it would violate the mirror symmetry. The results of the
paper for the first time explain the ways and the reasons of mirror symmetry
being created and broken in the nature.
