Amutation within the promoter region can alter transcription of a gene. describe how this can happen.

Correct

Explanation:

A mutation within the promoter sequences could lead to an alteration of its transcription basal level when:

The mutation is different enough to lower the transcription factors affinity to bind to this region.

Lowering the affinity of RNA polymerase, by reducing either the length or the sequence composition.

in 1859, charles darwin set out his theory of evolution by natural selection as an explanation for adaptation and speciation. he defined natural selection as the "principle by which each slight variation [of a trait], if useful, is preserved".