How can a person's muscle cells have the same exact DNA sequences as their nerve
cells even though the look and perform completely different?
The genome of the different cells changes.
Different genes are expressed and results in different proteins.
The two different cells become mutated.
They actually have different DNA in the two types of cells
The cells must mutate. They have different DNA. They must be heterozygotes. Each cell type only activates the part of the genome that makes them that cell type.
