Are you saying they have no choice? Bacteria act by majority concensus (vote), is that choice?
And you are so wrong. It is true that evolution is a movement in the direction of greatest satisfaction, a probabilistic deterministic imperative.
Against that random deterministic function works "natural selection", a probabilistic function that randomly selects out individuals, affecting the resultant population size of that specific line.
Two probabilistic dynamical functions create sufficient "superpositions" or "variable" future Implicates. Remember, at Planck scale we deal with "uncertainty" (a mathematical feed-back function in quantum mechanics, not a feed-forward hard "mathematical" determinism.
There is a universe of distance between Planck scale and Life-size scale. What we perceive as a continuous chronology forward in time, our reality is a projection of three dimensional patterns in an ocean of dynamic patterns at such small scales as to completely disappear from detection.
When we get down to pure energy, we enter the realm of chaos. Yet, from the chaos emerge dynamic fields consisting of virtual particles (Higgs) which have no physical presence, but affect the field for an instant.
Randomness abounds in these fields, yet once again from the dynamic movement within the fields emerge patterns which eventually form physical expression, such as the elementary particles.
From that point determinism becomes hard, except for pockets in the universe where unimaginable big supernovae or black holes defy all mundane natural laws and determinism goes out the window for awhile. And why not? After all the universe itself is a dynamic pattern with unknowable boundaries. So what? At Life-size scale determinism works just fine and a good thing it is. We would not want to lose the sun overnight, would we?
Could we lose God overnight without notice?
And how exactly does belief in a God change that Free Will equation in theists and atheists?
First, there is a major philosophical concept of Compatibilism. That's what you are selling, no?
Free Will in an otherwise deterministic world allows you to do what? Change the world? Change the Universe?