CRJS478 db3

Apr 24th, 2015
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This unit specifically studies the molecule known as DNA, or deoxyribonucleic acid. DNA is the genetic material of all living organisms. DNA is a nucleic acid. Nucleic acids are a type of organic molecules that contain genetic material. DNA is found in the nucleus of every cell in the human body. Cells of living things are made of prokaryotic cells or eukaryotic cells. In prokaryotic cells, DNA is circular, and in eukaryotic cells, DNA is linear. The human body is made of eukaryotic cells, which is why your chromosomes are linear. The majority of the work involved in forensics is based on DNA. History discusses many people as having input into the discovery of DNA, but the most familiar names are James Watson and Francis Crick. • In 4–6 paragraphs, address the following: o What is the history of DNA?  Out of all of the contributors to the field, who do you think has made the greatest contribution to the discovery of DNA? Why? o In your own words, describe and explain the components and

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CRJS478-DB3NameClassDateProfessorCRJS478-DB3 DNA or deoxyribonucleic acid is the genetic profile of the human being. An understanding of DNA developed out of the work of several great scientists. Mendel discovered a connection to gene and heredity while Griffith discovered genes could be transformed from one generation to the next. Avery was the first scientific to report the presence of DNA while Chargoff developed the equation for different DNA bases. Each scientist greatly contributed to the eventual discovery of the DNA profile but Watson and Crick discovered the DNA structure which is the well known double helix. DNA is a complex set of molecules in the body that are made up of many different components. DNA is unique to every person but the molecules in DNA are all nitrogen based. DNA is made of smaller molecules known as nucleotides that are arranged in distinct patterns allowing each person's DNA profile to be differentiated from the other. In turn, each nucleotide is itself made up of three primary components: the nitrogenous base, deoxyribose, and a phosphate group (Doublie, 1998). DNA is arranged in a ladder like structure. The

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