What Are You Asking Or Stating?
The answer to this can go both ways, but you most likely want to get a vaccination as a precaution, the reason behind this is if you now just hear of the outbreak and go to get a vaccine it could either A be too late or B the vaccine is gone.
Both answers are d, all of those things can affect the outcome of cell division, and the cell cycle is what we call this sequence of events.
I think is # 1 looking at the surface features of a virus. Is because #2 can see better than the naked eye, #3 because TEM microscope would kill them and #4 because is too small for the microscope.
AA, called homozygous dominant, and Aa, called heterozygous both would express the dominant phenotype.