what is synapsis? in which stage meiosis it occurs?
Answers
Answer:
Synapsis (also called syndesis) is the pairing of two homologous chromosomes that occurs during meiosis. ... When homologous chromosomes synapse, their ends are first attached to the nuclear envelope. These end-membrane complexes then migrate, assisted by the extranuclear cytoskeleton, until matching ends have been paired.
These goals are accomplished in meiosis using a two-step division process. ... Since cell division occurs twice during meiosis, one starting cell can produce four gametes (eggs or sperm). In each round of division, cells go through four stages: prophase, metaphase, anaphase, and telophase.
Answer:
Synapsis (also called syndesis) is the pairing of two chromosomes that occurs during meiosis. ... Sex chromosomes also undergo synapsis; however, the synaptonemal protein complex that holds the homologous chromosomes together is only present at one end of each sex chromosome.