Question

background information: all cells in a multicellular organism contain the same dna, yet they can have very different structures and functions. this is because cells control which genes are \turned on\ (expressed) and which are \turned off\ at any given time. for example, muscle cells express genes that produce proteins involved in contraction, while nerve cells express genes that produce proteins needed for sending signals. this selective gene expression allows cells to specialize and work together within the bodys systems. question: which statement best explains why nerve cells and muscle cells are different, even though they have the same dna? (2 points) they have different dna sequences in their nuclei. they express different sets of genes, producing different proteins for their specialized functions. muscle cells have more dna than nerve cells. nerve cells can change their dna to make new proteins at any time.

Explanation:

The background information states that cells control gene - expression. Muscle and nerve cells have the same DNA but different functions because they express different gene sets to produce specialized proteins.

Answer:

They express different sets of genes, producing different proteins for their specialized functions.