Explain why a prokaryote may fail to express a transplanted eukaryotic gene

What is gene expression control that occurs after the generation of rna

When it is summer at the south pole, a. the northern hemisphere is tilted toward the sun. b. the southern hemisphere is tilted away from the sun. c. the northern hemisphere is tilted away from the sun. d. both the southern and northern hemispheres are tilted toward the sun.

Why do you suppose the structural polysaccharide cellulose does not contain branches?