Question

Which modification affects an organism’s expressed characteristics while leaving its DNA sequence unchanged?

epigenetic change
epigenetic change

deletion mutation
deletion mutation

substitution mutation
substitution mutation

insertion mutation

Answer 1

The modification that affects an organism’s expressed characteristics while leaving its DNA sequence unchanged is called **epigenetic change**. Epigenetic changes can involve chemical modifications to the DNA or to associated histone proteins, which can influence gene expression without altering the underlying DNA sequence.