In a laboratory, several labels on the mouse cages were removed. The scientist who worked in the laboratory needed to determine which mice were clones and which were not in order to replace the labels correctly. What investigation would allow the scientist to determine which mice were clones?

A.
determining whether the mice can learn to complete a maze

B.
breeding the mice to see traits the offspring have

C.
sequencing the DNA of the mice

D.
finding out what food the mice prefer

C. sequencing the DNA of the mice