These are the brain, heart, kidneys, liver, and lungs. The human brain is the body's control center, receiving and sending signals to other organs through the nervous system and through secreted hormones.
For the beetle genus, see Coprini. Synapsis (also called syndesis) is the pairing of two homologous chromosomes that occurs during meiosis. It allows matching-up of homologous pairs prior to their segregation, and possible chromosomal crossover between them. Synapsis takes place during prophase I of meiosis.
After metaphase I and anaphase I, telophase I occurs. In some species, the chromosomes decondense during this substage. Decondensation typically does not occur if the cell undergoes rapid meiosis. At the end of this substage, there are two haploid daughter cells.