Heritable changes in gene expression not caused by alterations in DNA sequence refers to:: (A) Genetics, (B) Epigenetics, (C) Mutations, (D) Transposons
Answer is B. Epigenetics Means 'above genes'. Study of heritable changes in gene expression that donot involve changes to the underlying DNA sequence. This is a change in phenotype without a change in genotype. Epigenetic silencing (Genomic Imprinting) is one of the ways to turn genes off - contribute to differential expression. Major mechanisms of epigenetics DNA methylation (most common) Histone modifications (post translational)