•The three sources of genetic variability in a sexually reproducing organism are: •Independent assortment of homologous chromosomes during meiosis I and of nonidentical sister chromatids during meiosis II. •Crossing over between homologous chromosomes during prophase I. •Random fertilization of an ovum by a sperm.What happens to chromosomes during meiosis 2?
In Meiosis 2, chromatin condenses to chromosomes(prophase 1), they align in line(metaphase 2), each sister chromatid from a chromosome is separated and transported to opposite poles( during anaphase 1) ,then chromosomes decondense and nuclear envelope surrounds them(telophase 1),which disappeared in prophase 1.What is the difference between meiosis 2 and mitosis?
The main difference between meiosis and mitosis is the type of cells that undergo the process. Mitosis occurs in all eukaryote cells, while meiosis is a special type of mitosis that only occurs in gamete, or sex, cells. Mitosis creates two identical cells from one mother cell.