Essay on The Process of DNA Replication

No Works Cited
Length: 484 words (1.4 double-spaced pages)
Rating: Orange      
Open Document
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

The Process of DNA Replication


The process of DNA replication plays a crucial role in providing genetic continuity from one generation to the next. Knowledge of the structure of DNA began with the discovery of nucleic acids in 1869. In 1952, an accurate model of the DNA molecule was presented, thanks to the work of Rosalind Franklin, James Watson, and Francis Crick. To reproduce, a cell must copy and transmit its genetic information (DNA) to all of its progeny. To do so, DNA replicates following the process of semi-conservative replication. Two strands of DNA are obtained from one, having produced two daughter molecules that are identical to one another and to the parent molecule. This essay reviews the three stages of DNA replication process necessary for genetic inheritance and existence, namely, unwinding, complementary base pairing and joining.


The first stage of the process is the unwinding of old strands of the parent DNA molecule. The two strands of the double helix are first separated by enzymes. Then, each strand acts as a template for t...

Click the button above to view the complete essay, speech, term paper, or research paper

This essay is 100% guaranteed.

Title Length Color Rating  
Essay on Dna Replication - DNA REPLICATION WHAT IS DNA. DNA is a molecule that has a repeating chain of identical five-carbon sugars (polymers) linked together from head to tail. It is composed of four ring shaped organic bases (nucleotides) which are Adenine (A), Guanine (G), Cytosine (C) and Thymine (T). It has a double helix shape and contains the sugar component deoxyribose. THE PROCESS OF DNA REPLICATION How DNA replicates is quite a simple process. First, a DNA molecule is “unzipped”. In other words, it splits into two strands of DNA at one end of the DNA molecule....   [tags: essays research papers] 2181 words
(6.2 pages)
Powerful Essays [preview]
DNA Replication and Heterochromatin Essay - Heterochromatin is a tightly packed DNA region where genes in such regions are usually not transcribed. Numerous transposable elements (TEs) and repetitive DNA are found in heterochromatic regions. As they can transpose along the genome and disrupt gene functions, it is essential to repress such TEs and DNA repeats (Lippman et al., 2004). Heterochromatin is able to maintain internucleosomal interactions as well as chromatin fiber interactions between cis-elements. It can be passed on to subsequent generations and can control gene expressions by inhibiting transcription epigenetically, a process known as silencing....   [tags: anatomy, heterochromatin]
:: 13 Works Cited
1263 words
(3.6 pages)
Strong Essays [preview]
Essay on Investigating the DNA - Investigating the DNA Objectives 1. Understand the semiconservative nature of DNA replication. Realize that the process begins at unique origins of replication, and proceeds bidirectionally. 2. Know that DNA synthesis is catalyzed by a family of enzymes called DNA polymerases. Understand that DNA polymerase has a requirement for a template on which to synthesize the new DNA strand, and for a primer from which to extend the DNA strand. 3. Understand the various functions of the RNA polymerases, such as exonuclease and polymerase activities, and their function in the replication process....   [tags: Papers] 1204 words
(3.4 pages)
Strong Essays [preview]
The DNA Molecule Essay - The DNA Molecule In the autumn of 1951, James Watson (left) and Francis Crick (right) started work on unravelling the structure of DNA. It was known at the time that DNA was present in the nucleus of every living cell, and that it had something to do with heridity, but without a knowledge of its structure little more could be understood about how it actually worked. They approached the problem with the same methodology that had been pioneered by Linus Pauling, who after years of exhaustive study had earlier discovered that many proteins exhibited a helical structure....   [tags: Papers] 786 words
(2.2 pages)
Better Essays [preview]
Essay about DNA - DNA DNA, or Deoxyribonucleic Acid, is described, in Encarta Encyclopedia as a genetic material of all cellular organisms and most viruses. DNA carries the information needed to direct protein synthesis and replication. Protein synthesis is the production of the proteins needed by the cell or virus for its activities and development. Replication is the process by which DNA copies itself for each descendant cell or virus, passing on the information needed for protein synthesis. In most cellular organisms, DNA is organized on chromosomes located in the nucleus of the cell....   [tags: Deoxyribonucleic Acid essays research papers] 995 words
(2.8 pages)
Strong Essays [preview]
DNA Essays - DNA "There is no substance as important as DNA," Watson, 1991. Gene therapy is a controversial issue in today’s science society. Debates in the United States are covering a wide range of topics. I will discuss just a few viewpoints from both sides. First of all, a little background on DNA and genetics. DNA, or deoxyribonucleic acid, is a complex structure consisting of a double stranded helix made up of complementary base pairs. Adenine (A) pairs up with thymine (T) and guanine (G) matches with cytosine (C)....   [tags: Biology Biological Essays]
:: 7 Works Cited
1805 words
(5.2 pages)
Powerful Essays [preview]
Chromosome replication Essay example - Precise chromosomal DNA replication during S phase of the cell cycle is a crucial factor in the proper maintenance of the genome from generation to generation. The current “once-per-cell-cycle” model of eukaryotic chromosome duplication describes a highly coordinated process by which temporally regulated replicon clusters are sequentially activated and subsequently united to form two semi-conserved copies of the genome. Replicon clusters, or replication domains, are comprised of individual replication units that are synchronously activated at predetermined points during S phase....   [tags: essays research papers] 525 words
(1.5 pages)
Good Essays [preview]
DNA Report Essay - Many people have heard about this mysterious DNA molecule but don’t know much about it (what it is, where it’s located, what it does, etc.) In this report it will state the basics and investigate this mysterious molecule: deoxyribonucleic acid. DNA is a thin chainlike molecule found in almost every cell (Rubenstein, 2006), and is used in developing and functioning all known living organisms (“Wikipedia”, 2009). DNA is a Hereditary Material in a human body, (“U.S. National”, 2009), genomes determine hereditary (Rubenstein, 2006)....   [tags: Biology] 876 words
(2.5 pages)
Strong Essays [preview]
Essay on Correcting for Errors Inherent in DNA Pooling Methods - Correcting for Errors Inherent in DNA Pooling Methods Professor’s comment: This student’s research paper describes developments and refinements in an effort to correct for errors inherent in the DNA pooling methods employed in genetics research. I admire the clarity and efficiency with which she explains these developments. Introduction Many genetic diseases have yet to be located on the human genome for reasons that include their multiple loci and incomplete penetrance. To pinpoint these loci in terms of particular regions of the chromosomes, association studies, which compare allele frequency between affected individuals (probands) and controls, must be performed across the entire...   [tags: Exploratory Essays Research Papers]
:: 5 Works Cited
1552 words
(4.4 pages)
Strong Essays [preview]
Essay about DNA - DNA Deoxyribonucleic acid and ribonucleic acid are two chemical substances involved in transmitting genetic information from parent to offspring. It was known early into the 20th century that chromosomes, the genetic material of cells, contained DNA. In 1944, Oswald T. Avery, Colin M. MacLeod, and Maclyn McCarty concluded that DNA was the basic genetic component of chromosomes. Later, RNA would be proven to regulate protein synthesis. (Miller, 139) DNA is the genetic material found in most viruses and in all cellular organisms....   [tags: essays research papers fc]
:: 2 Works Cited
1429 words
(4.1 pages)
Strong Essays [preview]