That is called Urogenital myiasis which is a parasitic infestation. These flies are in the Diptera species group and the cause of this myiasis is from the eggs and larvae of this species (fly).
Let me know if you need further info.
- Dotz
D i believe, i could be wrong though
The answers are: condense; visible
Explanation:
In Prophase I, the chromosomes condense and become visible.