Answer: The synaptonemal complex (SC) that forms between homologs in Prophase I.
- A A structural protein component of the kinetochore complex structure
- B The synaptonemal complex (SC) that forms between homologs in Prophase I
- C A motor protein component of the meiotic spindle apparatus itself
- D A channel protein embedded within the nuclear pore complex structure
Correct answer: B. The synaptonemal complex (SC) that forms between homologs in Prophase I
Explanation: SYCP3 is a structural component of the lateral elements of the synaptonemal complex, the proteinaceous structure that holds homologs together during meiosis I.
The cell cycle: G1 (growth and preparation), S (DNA replication, chromosome number stays 2n but DNA content doubles), G2 (final checks before division), and M (mitosis itself) - together, G1+S+G2 make up interphase.
Concept context
Mitosis and meiosis: how cells divide for growth, repair, and reproduction.