chip off the old block

Fig. a person (usually a male) who behaves in the same way as his father or resembles his father. John looks like his father—a real chip off the old block. Bill Jones, Jr., is a chip off the old block. He's a banker just like his father.

A person who closely resembles a parent, as in Like her mother, Karen has very little patience-a chip off the old block. This term, with its analogy to a chip of stone or wood that closely resembles the larger block it was cut from, dates from ancient times (Theocritus, Idyls, c. 270 b.c.). In English it was already a proverb by the 17th century, then often put as chip of the old block.

A child whose appearance or character closely resembles that of one or the other parent.