A virus produces a protein X that activates only a few of the virus s own genes (V1, V2, and V3) when it infects cells. The cellular proteins A (a zinc finger protein) and the cellular protein B (a homeodomain protein) are known to be repressors of the viral genes V1, V2, and V3. You examine the complete upstream gene regulatory sequences of these three viral genes and find that: 1. V1 and V2 contain binding sites for the zinc finger protein A only. 2. V3 contains a binding site for...