In experiments in which certain kinds of bacteria were placed in a generous supply of nutrients, the populations of bacteria grew rapidly, and genetic mutations occurred at random in the populations. █████ ███████████ ████ ████ ███ ███████ ████████ ██ ███████
Which one of the following, ██ █████ ███████ ███ ██████████ ██ ██ ████████ ██████
Either all genetic █████████ ███ ██████ ██ ████ ███ ███████
The bacteria tested ██ ███ ███████████ ████ ██ █████████ ██████ ██████
If all genetic █████████ ██ ████████ ███ ███████ ████ ███ ███████ █████████ ██ █████ █████ ████ ████ ███ ██████ █████
The kind of ███████████ ██ █████ ███████ ████████ █████ █████ ███ ██ ██████ ██ ███ ███ ███████ ████████ ███████
The nutrients used ████ ███ ████ ██ █████ ████ ███████ ███ ████████ ██ ███████