The first offspring of a new ant queen are called nanitics and are special. They exhibit a lack of curiosity, and display more defensive characteristics, in an effort to balance the risk/reward of exploration for an early colony. If a nantic dies then 50%+ of the workforce dies which would be a dire scenario, but later one death is a drop in the bucket so exploration is prioritized.

It's not exactly what you were asking, but there is some variance in breeding strategies :)

EDIT: fixed typo, nantics -> nanitics