NR 507 Week 4 Midterm Exam Practice Questions and AnswersDefects in the encoding of histone-modifying proteins1. Housekeeping Genes are vital to the function and maintenance of all the bodys cells. What characteristic is with these genes?2. Mutations in the encoding of histone modifying proteins shown to influence the development of what congenital condition?3. Epigenetics refers to chemical modification that are made to what?4. Signals to change or modify epigenetic tags are from where?5. What sort of molecule is responsible for transferring signals into cells to gen regulatory proteins?6. Mutations in the encoding of histone-modification proteins shown to influence the development of what congenial condition?Epigenetics and its role on human development1. Research has provided support for the theory that epigenetic modification can result from deficient in utero nutrition causing?2. During which stage of human development does the role of epigenetics have the greatest impacton the development of epigenetic abnormalities?3. The difference between DNA sequence mutations and epigenetic modifications is?4. Research has provided support for the theory that epigenetic modification can result from deficient in utero nutrition causing which chronic disease?Totipotent cells and its ability to differentiate into any type of cell1. Which embryonic stem cell characteristic is referred to as a