Answer:
The positive charge of the histone proteins get reduced due to the process of histone acetylation, thus making the wrapping of DNA around the histones less tightened. The loose connected DNA afterward associates with the transcription factors for the articulation of the genes situated in that area.
Generally, when there is no requirement of gene anymore, the acetyl groups from the histones get withdrawn by the activity of histone deacetylase enzyme (HDAC9) that makes the DNA tightly wrapped and inaccessible again. In case, when less expression of histone deacetylase enzyme occurs, the process of deacetylation fails to take place. This indicates that within an immune cell, at the time of infection, the inflammatory gene, which was made available does not get re-wrapped firmly around the histones.
DNA fulfills the function of replicating itself, which is a process in which identical copies of each molecule of the same are made. This replication is essential so that the genetic data can be transferred from one generation to the next, constituting the basis of the inheritance.
<span>The mechanism is given by separating the two chains of the helix from it, to serve as a template in the formation of new chains, which are called messenger RNA. Which are the result of two molecules equal to the first. This replication is called semi conservative, since each molecule resulting from the replication has one chain of the mother molecule and another newly created one.</span>
El Nino is a climate cycle where the temperature of the Pacific Ocean changes because of movements of air and ocean currents. During this period, the trade winds in the south weaken, causing the warm water to move from the Western region to the Eastern region.
El Nino climate cycle begins when warm water in the western tropical Pacific Ocean shifts eastward along the equator toward the coast of South America.
Opposite of El Nino is La Niña when the waters of the tropical eastern Pacific are colder than normal and trade winds blow strongly than usual.
The main cause of extinction on Earth today is, Humans, we are the biggest
threat to our environments'.
Hope that helps!!!! ( We Humans, are our biggest enemy, and threat to ourselves, and he environment.).
