Mutations that neither benefit nor harm the organism have what

effect on the organism's survival?

Takes the food from the organism making them migrate further so they can have food.

No effect.

Explanation:

The mutations that benefit the organisms increase their survival fitness while the mutations that harm them serve to reduce their survival. However, many mutations do not benefit or harm the organisms which means that they do not impart any positive or negative trait that could affect the survival fitness of the organisms. These mutations are neutral mutations.