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.
During prophase, the chromatin in the nucleus condenses to form visible chromosomes, and the spindle forms. In late prophase, the nucleolus are broken down and the chromosomes continue condensing. describe what occurs during metaphase. chromosomes move to the middle of the cell, and they are now in the center.