Will environmental change accelerate gene mutation,

Usually not. The speed of mutation is due to the structural problem of DNA, and the external cause is strong stimulation, such as high-energy radiation above ultraviolet rays and certain compounds. The variation determined by internal factors will not accelerate. If the environmental change is ozone hole or serious chemical pollution, it will accelerate mutation.

The environment of the refrigerator is not enough to directly affect DNA. It can only be said that some cockroaches used to have cold tolerance genes, and when others could not bear the cold, they found heaven.