Final answer:
Promoters and enhancers are the elements that function specifically in eukaryotic transcription and gene expression. Promoters indicate where transcription should start, while enhancers increase the efficiency of gene expression.
Step-by-step explanation:
In eukaryotic transcription and gene expression, the elements that function specifically are promoters and enhancers. Promoters are DNA sequences that indicate where transcription should start and are typically located upstream of the gene they regulate. Enhancers are DNA sequences that can be located near or far from the gene and can increase the efficiency of gene expression.