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.
Quick Answer. Meiosis is a type of cell division that reduces the number of chromosomes in the parent cell. Meiosis produces four gamete cells. Meiosis is required to produce egg and sperm cells for sexual reproduction. Continue Reading.