Question

what is the final product of gene expression?
rna polymerase
a protein
a ribosome
an rna molecule
a dna molecule

Explanation:

Gene expression involves transcription (DNA to RNA) and translation (RNA to protein). The ultimate product that exerts a functional effect is a protein. RNA polymerase is an enzyme involved in transcription, ribosome is a structure for translation, an RNA molecule is an intermediate, and a DNA molecule is the starting - point for gene expression.

Answer:

a protein