Deoxyribonucleic acid stands for Introduction DNA. DNA is life’s genetic material composed of monomers considered to be nucleotides. Nucleotides are monomers composed of a cluster of phosphates, sugar and a nitrogen base. (Freeman, 2014) DNA’s nitrogen bases are the way in which knowledge can be preserved. DNA strands contain four different kinds of nitrogen bases: adenine (A), guanine (G), cytosine (C), thymine (T). These DNA nitrogen bases are special, and each pairs only with one.
Just Thymine (T) and Guanine (G) pairs of adenine (A), just C pairs of cytosine (C). The sequence of the nitrogen base pairs stores the data in the DNA. A double helix is the secondary structure of DNA. The DNA is inserted in its double helix shape as hydrogen bonds shape between the two antiparallel DNA strands. The dual-helix type makes the DNA easy to divide and duplicate by adding nitrogen base pairs to the split strands. The same copy of the original DNA molecule is made. Each new DNA molecule has a strand and a newly formed strand of the original DNA.
Only a small fraction of our total DNA makes us different from gorillas, chimpanzees and other primates. An even smaller fraction makes one person different from the next. It’s these differences that forensic DNA experts use to identify people and determine the source of biological evidence such as blood or semen found at a crime … Read more
As we begin the twenty first century, many new technological advancements make themselves readily available to us. One such technological advancement is genetic engineering. Genetic engineering is the altering of human genes in order to perfect these genes, or change them completely. This new technology is very controversial, because it deals with things such as … Read more
DNA – Deoxyribonucleic Acid – the material that codes for amino acids which form proteins, which in turn carry out functions of the cell. DNA is responsible for building life. Our physical characteristics, susceptibility to some diseases and disorders (e. g. breast cancer, sickle cell anemia), and a few behavior characteristics are passed from generation … Read more
The history of DNA structure discovery(sec. 4. 1): 1869- Johan miescher ???studies the nuclei of white blood cells(isolated th material using HCL and digestive proteins ???Named the substance nulclein and also found the material was rich in nitrogen and phosphorus. 919-Pheobus levene ???Discovered that DNA was made of chains of nucleotides *see nucleotide structure* 1920 … Read more