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    DNA and Replication

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    DNA and Replication You pose an interesting question – There are different types of Human DNA – which there are various classifications, Chromosomal DNA and Mitochondrial DNA. There is also the DNA present from normal flora microorganisms such as bacteria, viruses, mites, etc. Some of this microorganism DNA may be significant, such as E. coli DNA in the gut or Staphylococcus DNA on the skin. You even have DNA present from viruses of bacteria such as phage DNA. Some human viruses may be

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    Dna Replication

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    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

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    DNA replications History of the topic DNA replication is the reproducing two identical “daughter” helices from one “parental” helix of DNA that is used as the template. Each of the newly synthesized strands of DNA is made by the addition of a nucleotide that is complementary to the parent strand. But what is the importance of DNA replication? If DNA did not replicate, the size of the genome would slowly halve until each cell died during meiosis and mitosis. Hence, due to the splitting of cells during

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    The DNA Replication Process

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    up of cells that contain DNA. Deoxyribonucleic acid or DNA is the genetic material of living things that can be found in the nucleus of the cells (Alcamo, 1996). It contains the genes and the genetic codes that contain the information that are essential for life’s functions which are passed from generations to generations. DNA composes of two polynucleotide chains twisted around each other in the form of a double helix. According to Alcamo (1996), each strand of the DNA double helix can act as a

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    By the end of the 19th century, the first chapter of a powerful new science was all but written. The science was genetics and the critical first chapter concerned the rules, governing transmission of hereditary traits from generation to generation. Genetics is the study of inheritance (heredity) of parental characteristics and of variability of the characteristics of an organism. Variability can occur by genetic change and is in fact the basis of evolution. The first step in understanding heredity

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    The Process of Replication in a DNA Molecule Replication is the process of when a double-stranded DNA molecule is copied to produce two identical DNA molecules. DNA replication is one of the most basic processes that occurs within a cell. Each time a cell divides, the two resulting daughter cells must contain exactly the same DNA as the parent cell. To accomplish this, each strand of existing DNA acts as a template for replication. How is DNA replicated? DNA replication occurs in three major steps:

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    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

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    DNA Replication and Mutation

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    DNA Replication and Mutation The genetic material of eukaryotic cells is essential to the cells’ survival. The genetic material, in the form of DNA strands, must be replicated each time the cell divides. Replication is a necessary process for the maintenance of eukaryotic life because it allows new cells to be created with almost identical genetic material. Without the correct genetic material, cells would not produce the correct cellular components, and would therefore die because each component

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    DNA Replication and Heterochromatin

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    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

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    Explain the significance of DNA replication. To do this you need to make clear the relationship between DNA replication and the survival of a species. 1. DNA replication is vital in the survival of species as through replication, identical copies of genes can be made, ensuring it is able to repair itself when it is damaged (through the process of mitosis). DNA replication occurs when single-stranded chromosomes replicate in order to create double-stranded chromosomes, essential in creating daughter

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