Risk indexes. Definition: Categories of risk used to calculate fundamental beta, including (1) market variability, (2) earnings variability, (3) low valuation, (4) immaturity and smallness, (5) growth orientation, and (6) financial risk.
(See figure below, where meiosis I begins with a diploid (2 n = 4) cell and ends with two haploid (n = 2) cells.) In humans (2 n = 46), who have 23 pairs of chromosomes, the number of chromosomes is reduced by half at the end of meiosis I (n = 23). Prophase I.
In meiosis, A cell undergoes reduction division and, a human cell which is of 46 chromosomes, forms 4 cells of 23 chromosomes each. During the union of Gametes, 23 chromosome from the father's sperm and 23 from mother's egg cell fuse to form a diploid zygote of 46 chromosomes, and later embryo. If this meiosis doesn't happen a child would be having 92 chromosomes which is impossible at all costs. Hence meiosis is essential.