20 points
Which factors during meiosis provide the most significant contributions to genetic diversity?
Structure of the spindle fibers in the sister chromatids
Retention of two sister chromatids in the daughter cells
Crossing over and two possible orientations of each homologous pair
Development of haploid nuclei and cytoplasm division during cytokinesis
Which factors during meiosis provide the most significant contributions to genetic diversity?
Structure of the spindle fibers in the sister chromatids
Retention of two sister chromatids in the daughter cells
Crossing over and two possible orientations of each homologous pair
Development of haploid nuclei and cytoplasm division during cytokinesis