'A library of ancient information\r'

'Inside most(prenominal) of the cells in apiece human being resides molecules cognize as desoxyribonucleic acid, or deoxyribonucleic acid. These molecules are made up of four different bases which are assigned the garner G, C, A and T (for guanine, cytosine, adenine and thymine) and the manner by which these bases are arranged or sequenced defines the particular physique of protein that they will give rise to.\r\nGiven that reality are highly complex beings, it is natural and cook up 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).\r\nThe totality of an organism’s genes is known as its genome and since each gene provides the book of cultivations for making a specific protein, the genome rear be thought of as a collection or library of instruction manuals for producing all the proteins necessary for an organism to function normally and survive (K rogh, 2003).\r\nThis collection though, is not one that is built up as the organism grows but rather, one that is inherited from the organism’s elicits. Human beings contain 46 sets of these instruction manuals called chromosomes.\r\nChromosomes condesc break in pairs but during reproduction, only half of each 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 try to trace things back we can estimate how we have, for example, inherited the gene for our particular hair comment from either our mother or father, and how they in troll have likewise inherited theirs from either of their parents.\r\n passage a long way back towards our ancestors’ generation, we can therefore imagine ourselves as having inherited deep down us a library of ancient instruction manuals which tell our body how to produce protei ns practically the resembling way that they have been produced in our ancestors.\r\nNaturally though it would be expected that during the course of time, modifications may have been made in these instructions but the circumstance still remains that these basic instructions were passed on from one generation to the next so that the discipline it carries may serve succeeding generations.\r\n'