Which two factors have the greatest influence on creating increased genetic variation within a species?
A)Crossing-over, which takes place during prophase 1 of meiosis 1.
b)When the chromatids separate in metaphase 2 in meiosis 2.
c)Independent assortment of chromosomes that occurs during anaphase 2 of meiosis 2.
d)When the chromosomes separate in metaphase 1 of meiosis 1.