DNA is a thin, chainlike molecule found on every living cell on earth. It directs the formation, growth, and reproduction of cells and organisms. DNA is found in mainly within a cell’s nucleus, in structures called chromosomes. DNA consists of thousands of smaller chemical units (nucleotides). There are four DNA bases: Adenine, Guanine, Thymine, and Cytosine. “The exact amount of each nucleotide and the order in which they’re arranged are unique for every …showed first 75 words of 483 total…

…showed last 75 words of 483 total…lead to false results” (Encarta Encyclopedia, 1996 ). In retrospect thanks to all the advancements of technology we have been able to find out that all living cells contain the genetic material DNA. It has helped us advance as a species and help us find solutions to many problems. Some scientist believe that DNA is one of the fundamental substances of living things and who knows in the future in what other ways DNA may help us.