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    Chromosome replication

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    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

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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 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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    Replication Of Human Pheromones

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    Sexual Or Sexist? Replication Of Human Pheromones From the elixer in Love Potion Number Nine to the Orgasmatron in Orgazmo, the media reflect a popular fascination with the idea of an object that can control other people's sexual desires and behaviors. On a similar but dorkier note, I have occasionally heard at Haverford someone attribute a sexual "lucky streak" to the influence of pheromones. In our well-educated but socially awkward mind frame, we have hit on a more promising possibility than

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    The DNA Replication Process

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    sequence of its partner strand. DNA replication is semi-conservative. Thus, two identical molecules of DNA are formed during DNA replication of one helix of DNA. Each new molecule of DNA contains one strand of parental DNA which is from the original helix and one strand of new DNA when DNA molecule is copied. DNA replication is a process that all cells must go through and occur before cell division (Corazon, 2010). There are several steps involve during DNA replication which are initiation, elongation

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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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    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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    semi-conservative replication. DNA replication is the technique that produces two identical replicas of DNA from the true DNA molecule and occurs in all living organisms. DNA replication begins within the DNA called origins of DNA replication called ori and when the replication begins, proteins bind to ori sequences causing the dsDNA to unwind that denature the single-stranded and form a replication bubble(6). Replication proceeds in antiparallel from the ori producing two replication forks (“Y” at end

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    Replication

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    Mutation of DNA Replication Enzyme Polymerase and its Impact on Xeroderma Pigmentosum During the synthesis of DNA a process called replication takes place. Replication is the phase of DNA synthesis in which the cell copies itself prior to division. DNA replication is a complex multi step process involving numerous proteins and enzymes. Errors can occur during this process, which result in genetic mutations. This paper will explain how a defect involving the replication enzyme polymerase has lead

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    Genital Herpes

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    viruses, under a microscope, HSV-1 and 2 are virtually identical, sharing approximately 50% of their DNA and are treated similarly. HSV-1 and HSV-2 contain a large double-stranded DNA molecule. HSV is gram negative, consists of 162 capsomers and replication takes place within the nuclei of eukaryotic cells. The HSV virion has four parts: an electrondense core containing viral DNA; an icosapentahedral capsid; a tegument-an amorphous layer of proteins that surround the capsid; and an envelope. HSV-1

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