Bug life cycle:-
1:-tester find a bug and give its status "new" and send to TL(team leader)
2:-TL verify its wheater its a geniune bug or not if yes then give its status "open" and forward to developer for fixing
3:-developer now fix the bug and can give its status:
i-rejected
ii-differ
iii-or if he/she solve it give its status fix and send to tester
4:-now tester verify it if the bug is fix then give its status-closed
and if bug is still exist then give its status-reopen
it was bug life cycle