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.
1 Meiosis occurs in diploid cells. 2  The chromosomes duplicate once, and through two successive divisions, four haploid cells are produced, each with half the chromosome number of the parental cell.3  Meiosis occurs only in sexually reproducing organisms. Meiosis occurs in diploid cells. 2  The chromosomes duplicate once, and through two successive divisions, four haploid cells are produced, each with half the chromosome number of the parental cell.