  We discuss self-similar property of the tricorn, the connectedness locus of
the anti-holomorphic quadratic family. As a direct consequence of the study on
straightening maps by Kiwi and the author, we show that there are many
homeomorphic copies of the Mandelbrot sets. With help of rigorous numerical
computation, we also prove that the straightening map is not continuous for the
candidate of a "baby tricorn" centered at the airplane, hence not a
homeomorphism.
