| List I (Sub Phases of Prophase I) | List II (Specific characters) | ||
| A | Diakinesis | I | Synaptonemal complex formation | 
| B | Pachytene | II | Completion of terminalisation of chiasmata | 
| C | Zygotene | III | Chromosomes look like thin threads | 
| D | Leptotene | IV | Appearance of recombination nodules | 
The output (Y) of the given logic implementation is similar to the output of an/a  …………. gate.