Using Jefferson as an example, discuss the pros and cons of considering a public figure's personal life and choices when evaluating their legacy and their public accomplishments. What other public figures can you think
of whose personal choices make them a more complicated figure than their public accomplishments show?

Some organisms have a large geographic range. for example, the norway rat lives on every continent except antarctica. a population of norway rats is the number of rats in one particular area. do you think it’s scientifically possible for a population of norway rats in north america to carry different genetic mutations than a population of norway rats in africa? do you think it’s possible that they carry some of the same mutations? what types of information can scientists learn by studying the genomes of these two populations of rats?