Why is a classroom door knob the least infected place in a classroom?

If the first nucleotide after the promoter on the bottom dna strand in the simulation is changed from c to t, what would the resulting nucleotide be on the mrna? test your prediction by making the change and running the simulation.

Forces that are equal in strength but opposite in direction are a.) balanced b.) unbalanced c.) always result in motion d.) do not exist

Explain how paleontologists use trilobite fossils as index fossils for various geologic time periods.