Factors that can alter the level of expression of a gene include

These could be environmental factors such as;

Exposure to UV radiation that causes mutations

an increase in salinity.

an increase in environmental temperature.

presence of a particular energy substrate.

Gene expression can be affected in different stages from transcription, RNA processing, to post-translation modification.

in addition to spreading humanist ideas, erasmus has contributed to criticism of corruption in the church.

the electromagnetic energy from the sun arrives in the form of visible and invisible light.