The study of Epigenetics includes which of the following? (Choose all that apply)

How is the expression of genes controlled at the chromosomal level?   A. DNA can synthesize extra histones as needed   B. DNA can either be condensed into heterochromatin or decondensed into euchromatin     C. DNA can be unwound into euchromatin to reduce the level of expression   D. The expression of DNA can only be controlled at the transcriptional level   E. DNA is spontaneously deleted from a chromosome if not needed

1. Hyperproliferation or cell cycle arrest; cell cycle arrest or accumulation of dna; hyperproliferation or growth stress  increase or decrease

Refer to the following illustration to answer the question. O protein A is not made because it is normally required for its own transcription TRANSIENT SIGNAL TURNS ON EXPRESSION OF PROTEIN A What is protein A? O a maintenance methyltransferase O a histone PAY O a cell type-specific gene regulator a HAT (histone acetyltransferase) any of the above PAD the effect of the transient signal is remembered in all of the cell's descendants