A library of ancient information

Inside most of the cells in distri howeverively human being resides molecules know as DNA, or deoxyribonucleic acid. These molecules ar do up of four different bases which be assigned the letters G, C, A and T (for guanine, cytosine, adenine and thymine) and the manner by which these bases are arranged or sequenced defines the circumstance kind of protein that they will give rise to.Given that populace are highly complex organisms, it is natural and correct to assume that we are made up of a huge number of different proteins that are coded for by an equally large number of different DNA sequences known as genes (Krogh, 2003).The totality of an organisms genes is known as its genome and since separately gene provides the cultivations for making a specific protein, the genome can be thought of as a assembly or library of instruction manuals for producing all the proteins necessary for an organism to function normally and survive (Krogh, 2003).This collection though, is not one that is built up as the organism grows but rather, one that is contractable from the organisms parents. Human beings feature 46 sets of these instruction manuals called chromosomes.Chromosomes come in pairs but during reproduction, only half of distributively pair is passed on by each parent to their offspring so that the offspring would likewise end up having a total of 46 chromosomes (Krogh, 2003). This goes on for each new generation of offspring produced and so if we essay to trace things back we can imagine how we have, for example, inherited the gene for our particular hair color from either our mother or father, and how they in piece have likewise inherited theirs from either of their parents.Going a massive way back towards our ancestors generation, we can therefore imagine ourselves as having inherited inside us a library of ancient instruction manuals which testify our body how to produce proteins practically the same way that they have been produced in our ancesto rs.Naturally though it would be expected that during the course of time, modifications may have been made in these instructions but the fact still rest that these basic instructions were passed on from one generation to the next so that the information it carries may serve succeeding generations.