Word Origin and History for corpus delicti. 1832, Latin, literally body of the offense; not the murder victim's body, but the basic elements that make up a crime; in the case of a murder, including the body of the murdered person.
Or: there are 23 unique types of chromosome in your cells (remember, we are treating the sex chromosomes as the same for simplicity). After replication of the 46 chromosomes, the cell contains 92 chromatids (in 46 pairs). After mitosis two identical cells are created with the same original number of chromosomes, 46. Haploid cells that are generated through meiosis, such as egg and sperm, only have 23 chromosomes, because, remember, meiosis is a reduction division..
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.