What is the difference between genetic drift and natural selection?
A. Genetic drift is the random increase or decrease of certain genes in a population; natural selection in not random
B. Genetic drift is the change in a population's genes over time: natural selection is the evolution of a population over time
C. Genetic drift is the selection of random traits in a population; natural selection s the selection of specific traits
D. Genetic drift is the frequency of genes in a population; natural selection is the frequency of adaptations in a population