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.
Phases of Mitosis. 1  Interphase : Chromosomes duplicate, and the copies remain attached to each other. 2  Prophase : In the nucleus, chromosomes condense and become visible. In the cytoplasm, the spindle forms. 3  Prometaphase : The nuclear membrane breaks apart, and the spindle starts to interact with the chromosomes.