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Viruses - apbio107
Viruses - apbio107

... 3. Diagram the lytic and lysogenic cycles of bacteriophages and give examples of viruses that follow each. ...
Molecular Genetics
Molecular Genetics

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Glossary of Key Terms in Chapter Two
Glossary of Key Terms in Chapter Two

... exon (17.4) the protein-coding sequences of a gene that are found on the final mature mRNA. initiation factors (17.6) proteins that are required for formation of the translation initiation complex, which is composed of the large and small ribosomal subunits, the mRNA, and the initiator tRNA. inserti ...
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Genome Organization
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Identify the goal of DNA replication Explain the role of DNA in
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Lecture 10 in molecular biology by Dr. Sawsan Saijd

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Molecular Markers - Personal Web Pages

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Advanced Environmental Biotechnology II
Advanced Environmental Biotechnology II

... genes within the fragments, as well as by other characteristics such as G+C content bias and codon usage preferences. Computational genome annotation, consisting of the prediction of genes and assignment of function using characterized homologs and genomic context, allows for the description of the ...
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Gene Technology

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... In order to study a DNA fragment (e.g., a gene), it needs to be amplified and eventually purified. These tasks are accomplished by cloning the DNA into a vector. A vector is generally a small, circular DNA molecule that replicates inside a bacterium such as Escherichia coli (can be a virus). ...
NOTES AND PROBLEM SET 3
NOTES AND PROBLEM SET 3

... larger or smaller than lp . Consider this polymer to be confined within the long tube of diameter D. The tube diameter is much smaller than both L and lp . Estimate the number of collision points between the tube and the polymer. Estimate the increase in the free energy due to confinement. 2. A grea ...
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Topic # 7: Nucleic Acids

... III. DNA structure and replication C. Proteins involved in replication 1. DNA replication is carried out by a complex system of enzymes 2. DNA helicase unwinds the DNA at the replication fork 3. Topoisomerase releases the strain that develops ahead of the helicase 4. Single-stranded binding protein ...
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DNA / RNA blue print of life PPT

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WELCOME TO BIOLOGY 2002 - University of Indianapolis
WELCOME TO BIOLOGY 2002 - University of Indianapolis

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DNA, RNA, & Meiosis Review

... differ in female organisms from male organisms? • Males – one gamete forms four sperm cells in even meiotic divisions • Females – one gamete forms one egg cell with most of the cytoplasm and three polar bodies which are NOT used in reproduction, this occurs because of uneven meiotic divisions ...
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DNA supercoil



DNA supercoiling refers to the over- or under-winding of a DNA strand, and is an expression of the strain on that strand. Supercoiling is important in a number of biological processes, such as compacting DNA. Additionally, certain enzymes such as topoisomerases are able to change DNA topology to facilitate functions such as DNA replication or transcription. Mathematical expressions are used to describe supercoiling by comparing different coiled states to relaxed B-form DNA.As a general rule, the DNA of most organisms is negatively supercoiled.
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