Which statement about epigenetics is false?
a) Epigenetics relates to changes in gene expression in an organism that are caused by mutation (changes in nucleotide sequence).
b) Epigenetics relates to changes in gene expression that do not relate to changes in nucleotide sequence.
c) Environmental factors cause epigenetic changes in gene expression.
d) Environmental factors cause epigenetic changes in gene expression that can increase or decrease the individual's risk of disease.
e) Epigenetic changes in gene expression enable identical twins to show different phenotypes.
