Well, when chromosomes cross over during prophase 1 of meiosis, the homologous pair of chromosomes exchange segments of DNA which happen to be the genes. So the significance of crossing-over during prophase 1 is that it adds genetic variation to sexually reproducing organisms.
Lymphocytes is the answer.
Meiosis is when a sperm and egg join together to reproduce another organism. We need meiosis to reproduce more organisms
Structure B. Chloroplasts are the site of ATP production in plant cells
