Thanks for this imagcq, Hope all gets better with you.
1) Surveys school for tiredness of pupils (9)- Eyestrain? Eyes – surveys, school – train gives “eyestrain” – tiredness of pupils.
2) Old professors run from one ancient ship returning (7) Emeriti? One- I + trireme (ancient ship) reversed without r for run, gives emeriti – old professors.
3) Season without the fifth piece of parsley (5)- Sprig? Spring – season, without fifth letter gives sprig – term for a piece of parsley. .
4) Angry worker taking insult at first in Antoinettes alternative to bread? (9) Croissant? “Cross ant” (angry worker) with I the first letter of insult gives French (Antionette’s) alternative to bread. .
This gives EN EI SG CT for which gives genetics?