Essay about Dna And The Structure And Function Of Dna

Essay about Dna And The Structure And Function Of Dna

Length: 871 words (2.5 double-spaced pages)

Rating: Better Essays

Open Document

Essay Preview

Deoxyribonucleic acid or more commonly known as DNA can be utilized to identify criminals with unbelievable precision when biological evidence exists. Not only this but, DNA can be utilized to prove suspects innocent and redeem mistakenly accused or those convicted of crimes can be let free. It is vital to understand the structure and function of DNA and how this relates to DNA investigation in forensic science. It is essential to understand the basics of deoxyribonucleic acid like the structure and function. Having this information creates a better understanding of how forensic scientists use DNA to identify people when biological evidence exists.
The structure of DNA may seem complicated, but the basic structure is that it is found in the nucleus. Deoxyribonucleic acid is a long molecule that contains organisms unique genetic code and this is in part why forensic scientists are able to identify people. According to Advancing Justice Through DNA Technology, "It is part of a genome and holds instructions for making all the proteins in an organism." (Lynch, 2014). DNA is a double-helix with two strands running in opposing directions. It is read from a 5 ' to 3 ' direction. Every chain is a polymer with subunits referred to as nucleotides. Every strand has a deoxyribose sugar backbone molecules linked together by a phosphate group.
DNA is a two-stranded molecule with a double helix shape. It is made up of four parts (nucleotides), stringed together and of these four parts there are two classifications: purine and pyrimidine. The four parts are the adenine, thymine, guanine and cytosine. The adenine is always attached to thymine and guanine and cytosine is always attached.
The function of DNA is that is stores organisms ge...


... middle of paper ...


... meaning there is a smaller chance two people will share a DNA profile. However, such figures can only ever be estimations and don 't take certain factors into consideration, such as biological relatives.
Deoxyribonucleic acid can be used to clear suspects and absolve those mistakenly blamed or found guilty of crimes they did not commit. By the same token, it can recognize culprits with unbelievable precision when biological proof exists. Having prior knowledge to the structure and function of DNA creates a better understanding of how forensic scientists use DNA to identify people when biological evidence exists and why DNA has become an incredible technological advancement, not only to have a better understanding of oneself but a better understanding of how similar and different individuals are. These differences are the key to catching and defending individuals.

Need Writing Help?

Get feedback on grammar, clarity, concision and logic instantly.

Check your paper »

Chemistry and the Structure of DNA Essay

- ... The backbone of the nucleic acids consists of the interaction between phosphate groups and the hydroxide groups of nucleic acids. These are held together by covalent bonds called phosphodiester bonds. The helix itself is held together by hydrogen bonds. Although hydrogen bonds are weak individually, there are so many of them within DNA that the strands are held tightly together. Without basic chemistry the structure of DNA would be a mystery. The instructions to make a protein are coded by DNA....   [tags: function, protein, products]

Better Essays
599 words (1.7 pages)

Dna And Function Of Actinomycin D Essays

- Discussion: Our preliminary hypothesis was that the Chlamydomonas cells exposed to actinomycin D would show slow regeneration of the flagella compared to the control, or no regeneration of the flagella. This hypothesis was based on researching the structure and function of actinomycin D. structurally, actinomycin D is a cromopeptide, which consists of a phenoxazone ring and two cyclic pentapetides. The two cyclic pentapetides contain polar, uncharged amino acids such as threonine and proline and the phenoxazone ring contains N-H hydrogen bond and a free, nucleophilic oxygen (Hughes, 2009)....   [tags: DNA, Cell nucleus, Cell, Messenger RNA]

Better Essays
1354 words (3.9 pages)

A Research Study On Protein Structure, Function And Biochemical Adaptation

- The primary goal of this research-inspired laboratory experience is to integrate genuine research into the biochemistry laboratory course for undergraduate students. This course introduces students to resources available to them via the Internet as well as standard experimental approaches and techniques used in modern biochemical research, through hands-on experimentation, discussion and application. Techniques will include bioinformatics tool, DNA purification and analysis, protein purification and quantification, enzymatic characterization, chromatography, electrophoresis, and spectroscopic analysis....   [tags: Protein, Amino acid, DNA, Acid]

Better Essays
1076 words (3.1 pages)

Dna Replication And Development Of The Living Organisms Essay

- DNA is the hereditary material and it carries all the genetic information that used in functionally and development of the living organisms. DNA is composed of two DNA strands that are antiparallel, coiled around each other to form a double helix. Double helix stands for two DNA strands set themselves like a ladder with the phosphate backbone forming the side of the ladder and these bases forming the rungs(6). DNA is the polymer of nucleotides, each consisting of three components; nitrogenous base, ribose sugar and a phosphate group....   [tags: DNA, DNA replication, Base pair]

Better Essays
1667 words (4.8 pages)

Structure and Function Essay

- First labelled an oncogene upon its discovery in 1979, p53 (or TP53 in humans), was correctly re-labelled a tumour suppressor a decade later following the discovery that the gene previously being studied was, ironically, a mutant. Now realised as the most common mutated gene, found in a staggering 50% of cancers, p53 is a keystone in the face of cancer. Its structure and functions continue to be delved into. Amino acids, genome stability, tumour suppression, iPS. Gene Structure 53 kilo-Daltons in size, 11 exons and 10 introns, p53 gene is located on chromosome 17....   [tags: Medical Research]

Better Essays
1173 words (3.4 pages)

The Structure And Function Of The Organelles Essay

- The structure and function of the organelles in an animal cell Organelle Structure Function Image Nuclear envelope A double phospholipid bilayer membrane with an enclosed space between them called the nucleoplasm. The outer membrane extends to form the endoplasmic reticulum. Both the membranes are connected by the nuclear pores. They surround the whole nucleus. The main function of the nuclear envelope is to protect the nucleus by preventing the free travel of large or polar molecules into the nucleus due to its phospholipid bilayer membranes....   [tags: Cell, Endoplasmic reticulum, Organelle, Protein]

Better Essays
1594 words (4.6 pages)

Essay on DNA Interactions Between Proteins

- DNA: Interactions between Proteins Deoxyribonucleic Acid is a molecule that contains the genetic makeup of almost all living organisms. While Deoxyribonucleic Acid, or DNA, has been successfully mapped out, many of its interactions with certain proteins and enzymes have not been fully revealed within the atomic level. The history and mysteries of DNA continue to fascinate biologists and chemists alike. However, we must question, who was the first to discover DNA, and what scientists have done to further enhance our understanding of it....   [tags: Biology Medical DNA]

Better Essays
1021 words (2.9 pages)

Discovery of the Structure of DNA Essay

- Discovery of the Structure of DNA On the last day of February in 1953, according to James Watson, Francis Crick announced to the patrons of the Eagle Pub in Cambridge, “We have discovered the secret of life” (Watson 115, 1980). As Brian Hayes, the author of “The Invention of the Genetic Code” states, “If life ever had a secret, the double helix of DNA was surely it” (1). However, it was not the work of these two men alone that led to the discovery of the power the lies within the double helix, but rather the work of many scientists that was carefully picked apart and pieced together by the two who received the most fame for the work....   [tags: History Historical Science Biology Essays]

Better Essays
2382 words (6.8 pages)

The Human Dna Repair Disease Essay

- As I was reading the book for my genetics class, I was amazed of how DNA replication works. DNA replication is the process which copies the DNA in a cell, which then creates two daughter cells. The process is important because it replaces damaged or dead cells. Ineffective protection from the damage can produce a genetic instability causing mutations. DNA replication plays an important role in our body to stay healthy and avoid getting many diseases. Defects in DNA repair can result to many rare hereditary diseases....   [tags: DNA, DNA replication, Gene, Protein]

Better Essays
1038 words (3 pages)

Essay about DNA

- DNA After staying on the plant Earth reaching the human genetic technology, I have come up with this report the four things I am going to talk about in this report are: 1) What is the chemical basis of the plant Earth 2) What do human mean by "genetic technology" and how is it possible 3) How have human used this technology 4) Are humans concerned about this technology 1)The chemical basis of the plant earth is deoxyribonucleic acid (generally shortened to DNA), it has the shape of a long twisted ladder each rung of this ladder is made up of a pair of chemical bases, the information that human body need to make proteins is coded and contained in the order of these bases along t...   [tags: essays research papers fc]

Better Essays
849 words (2.4 pages)