Which of the Following was Found to Be a Difference

Question

Which of the following was found to be a difference between v-src and c-src?
A) C-src contained eleven introns whereas v-src had none.
B) V-src contained eleven introns whereas c-src had none.
C) C-src caused the formation of tumors in mice, whereas v-src caused tumor formation in chickens.
D) V-src caused the formation of tumors in mice, whereas c-src caused tumor formation in chickens.
E) None of these are correct.

Accepted Answer

V-src, the viral form of the src gene, lacks introns, which are non-coding regions found in the genomic DNA of eukaryotic cells. In contrast, c-src, the cellular counterpart of the src gene, contains introns. This difference highlights a fundamental distinction between viral and cellular genes, where viral genes often lack introns due to their need for a compact genome.