1. A mutation in the gene that encodes for the histone acetyl transferase that would acetylate histones: Chromatin Remodeling how this might impact gene expression specifically!

Gene Regulation and Breast Cancer Researchers have found that breast cancer cells commonly express a transcription factor known as Ets1 at high levels. Many types of breast cancer are also sensitive to the presence of the hormone estrogen. In estrogen-sensitive breast cancers, tumors grow much more quickly when high levels of estrogen are present. A biologist decides to design an experiment to determine if there was any cooperation between estrogen and Ets1in causing tumor growth. The biologist developed two types of breast cancer cells: one that expressed Ets1 at very high levels, designated as Ets+, and one that was unable to express Ets1, designated as Ets–. The biologist used four test groups in an experiment: 1.  Ets1+ cells with added estrogen 2.  Ets1- cells with added estrogen 3.  Ets1+ cells without estrogen 4.  Ets1- cells without estrogen The growth rate of each group of cells was monitored and recorded. Use the passage to answer the question. After five days of cell…

Gene expression in mammals can be increased by which of the following mechanisms? X-chromosome inactivation (as in the case of the female tortoiseshell cat) histone demethylation histone methylation histone deacetylation histone dephosphorylation

Please answer question 10