If all three populations were mixed together and placed at 37°c, which of the following would be most likely to happen?
(a) only the population evolved at 25°c would die and become extinct.
(b) only the population evolved at 35°c would survive and reproduce.
(c) all the bacteria would die and the populations would become extinct.
(d) all populations would grow, and transfer of genes would create one common population.
(e) it cannot be determined from the information given.