Which of the following statements best describes the significance of meiosis in human sexual reproduction?
A. Meiosis causes a decrease in genetic variation, because of the creation of diploid (2N=46) gametes.
B. Meiosis causes an increase in genetic variation, because of the crossing over of genetic material between homologous chromosomes.
C. Meiosis causes an increase in genetic variation, because of non-disjunction of homologous chromosomes.
D. Meiosis causes a decrease in genetic variation, because of polyploid gametes.