Question

Which modification affects an organism’s expressed characteristics while leaving its DNA sequence unchanged?(1 point)
Responses

deletion mutation
deletion mutation

substitution mutation
substitution mutation

insertion mutation
insertion mutation

epigenetic change
epigenetic change

Answer 1

epigenetic change

Explanation: epigenetic modifications (e.g., DNA methylation, histone modifications) alter gene expression and phenotype without changing the underlying DNA sequence. Deletion, substitution, and insertion mutations change the DNA sequence.