like father, like son
A son is usually like his father in the way he acts. — A proverb.
Frank's father has been on the city council; he is now the mayor, and is running for governor. Frank is on the student council and is likely to he class president. Like father, like son.
Mr. Jones and Tommy are both quiet and shy. Like father, like son.
Compare: SPITTING IMAGE, FOLLOW IN ONE'S FOOTSTEPS.
Source: A Dictionary of American Idioms