Summary Essay Example | Topics and Well Written Essays - 500 words - 163

Summary - Essay Example lves to handle the changes in the environment in a period or framework that is way shorter than that provided by the usual mechanisms involved in natural selection. This idea is what research on cancer is focusing on. The process of epigenetics involves chromatin remodeling, a process that involves the modification of the DNA methylation and histone (Burrggrreen, para 1). Burrggrreen adds that the process occurs alongside RNA-mediated modifications and involves self-sustenance loops and structural inheritance (Ho DH 3). There are particular reasons why the study of epigenetics is important today (Suter and Aagaard-Tillery, para 45). They add that pollution and global climate change in relation to global warming means that the human race needs to survive in the continually changing environment. This is in relation to what the two articles by Burrggrreen and Feero et al. have discussed- the body will need to alter its genetic sequence so that it can be able to handle the dangers that both our genetic makeup and environmental changes present. The process of epigenetics occurs without the modification of the gene sequence. The idea of epigenetics has not been fully embraced partly because it is not a part of physiological investigations (Feero et al., para 4). Any change in environment continually affects the subsequent generation since there is suppressing or expressing a certain character. This expressing or silencing of gene does not affect the gene sequence for at least some generations (Burrggrreen, para 1). The understanding of the role played by epigenetic changes in regulating the expression or silencing of genes has seen significant advancement over the past decade. These changes are simple chemical alterations in the DNA that do not affect the chief base-pair sequence of the DNA. In the aforementioned DNA methylation involves enzymatic methylation of the cytosine nucleotides that are found in some regions of the DNA. The transcription does not occur Summary Essay Example | Topics and Well Written Essays - 250 words - 93 Summary - Essay Example The author discusses about the Stone Age era by shedding light on Neanderthals that coexisted with each other at that time. Furthermore, the author explored the concepts of homosapiens. Homosapiens began to formulate a certain religious behaviour. The city of Mesopotamia contained pottery and other artifacts that were made of mud and belonged to temples. Unlike the solidity of the Egyptians tombs the houses seen in Mesopotamia were made from different materials, were shaped as a rectangular mud walls and were covered with a palm trunk roofs. Another ancient place that the book discusses is the Indus valley, Harapan, Mehrgarh and Mohenjo-Daro. These areas are considered some of the most ancient civilizations within Pakistan’s territory. The book then moves onto discusses a brief history from the old civilized Rome. Their comprehensive approach to urban architecture helped the empire construct hundreds of cities throughout the Mediterranean. Finally the book discusses the influe nce Islam had on the overall architectural design of the globe (Kostof and