Question

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

Explanation:

Gene expression involves transcription (DNA to RNA) and translation (RNA to protein). The final product is a protein which carries out the functions encoded by the gene. A ribosome is a structure involved in translation, a DNA molecule is the starting - point for gene expression, RNA polymerase is an enzyme for transcription, and an RNA molecule is an intermediate.

Answer:

a protein