Predict What Would Occur in the Experiment Shown in Figure

Predict what would occur in the experiment shown in Figure 18.1 if Tonegawa and colleagues had mistakenly inserted the antibody gene enhancer in reverse orientation (backward) into the β-globin gene.

A) There would be no β-globin gene expression in the antibody-producing cells.
B) There would be minute levels of β-globin gene expression in the antibody-producing cells.
C) There would be transcription of the β-globin gene,but on the opposite strand of DNA from the one normally transcribed.
D) There would be little difference in the results of this experiment and the one shown in the figure.