How did the imperialistic European powers claim control over most of Africa by the end of the 1800's?
a. They marched in and created colonies by force
b. By carving up Africa at the Berlin Conference of 1884
c. Following the direction of King Leopold II of Belgium
d. All the above

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?