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The Mammalian Mismatch Repair Pathway Removes DNA 8
The Mammalian Mismatch Repair Pathway Removes DNA 8

... mouse embryo fibroblasts (MEFs) contained approximately 2-fold more oxidized guanines than DNA from msh2⫹/⫹ MEFs. The average values were 0.68 and 0.34 8-oxoG per 106 guanines for msh2⫺/⫺ and wild-type cells, respectively (p ⬍ 0.0001, Student’s t test for paired samples). There was evidence of a gen ...
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... essential role in nucleic acid metabolism, including the processes of DNA replication, repair and recombination. DNA polymerases are ubiquitous in nature, having been identified in all cellular organisms from bacteria to humans as well as in many eukaryotic viruses and bacteriophages [1]. Furthermor ...
Genetics Project
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RNA polymerase II is the key enzyme in the process of transcription
RNA polymerase II is the key enzyme in the process of transcription

... All questions are given in English, but you may choose yourself in which language (Norwegian or English) you prefer to answer. This exam consists of two parts. The first part is a set of questions, where you are supposed to provide brief and concise answers through a few phrases only (less than 10 p ...
RNA polymerase II is the key enzyme in the process of transcription
RNA polymerase II is the key enzyme in the process of transcription

... All questions are given in English, but you may choose yourself in which language (Norwegian or English) you prefer to answer. This exam consists of two parts. The first part is a set of questions, where you are supposed to provide brief and concise answers through a few phrases only (less than 10 p ...
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Sample Chapter

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... Once it was established that DNA was the genetic material carrying the instructions for life so to speak, attention turned to the question of “How could a molecule carry genetic information?” The key to that became obvious with a detailed understanding of the structure of the DNA molecule, which was ...
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... with 32P-labeled pBR322 DNA, bacteriophage DNA containing a single-copy gene, and bacteriophage DNA containing a fourfold repetitive actin gene sequence (15) (generous gifts of M. Krause). After washing, the hybridization to individual spots was quantitated by liquid scintillation counting. To contr ...
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Bacterial Genetics

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... composed of nucleotides polymerised into polynucleotide chains, although there are some slight differences in the compositions of RNA and DNA. RNA is a single-stranded molecule, folded into various forms containing some double-stranded regions. Three different types of RNA molecules play key roles i ...
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Section D - Prokaryotic and Eukaryotic Chromosome Structure

... which are then packaged into the phage particles. • Ligated λ ends which do not contain an insert, or have one which is smaller or larger than the 20kb optimum, are too small or to large to be packaged, and recombinants with two left or right arms are likewise not viable. ...
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PreAP Biology End of Course Exam Review by CA State Standards
PreAP Biology End of Course Exam Review by CA State Standards

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The Anatomy of the Human Genome

... chromosome, that a gene was mapped to a specific autosome, ie, the Duffy blood group gene to chromosome 1.18 This was achieved by Roger Donahue, then a Johns Hopkins University PhD candidate in human genetics, through a linkage study of a chromosome 1 heteromorphism (one chromosome 1 was unusually l ...
Engineering 2 End of Course Exam Review by CA State Standards
Engineering 2 End of Course Exam Review by CA State Standards

... 4. Why are viruses considered to be “non-living”? (2-3, 189) 5. Which is the least complex and which is the most complex : (viruses, prokaryotic cells, and eukaryotic cells) d. Students know the central dogma of Chapter 4 and 10 molecular biology outlines the flow 1. What is the function of the nucl ...
Inheritance Patterns in Dragons
Inheritance Patterns in Dragons

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159 Kb

... apparatus, including their own DNA, messenger RNA, transfer RNA and ribosomes. These bear witness to their bacterial origins. Mitochondrial DNA, like bacterial DNA, comes packaged as a single circular chromosome, and is naked (not wrapped in proteins). The sequence of letters in its genes is closely ...
Transduction of DNA information through water and electromagnetic
Transduction of DNA information through water and electromagnetic

... the emitting DNA segment can be obtained by using pure water exposed to the corresponding DNA EMS and, upon addition of enzymes, primers, etc., submitted to PCR cycles. Such a transduction process has been observed to occur also in EMS exposed living cells of tumoral origin. These experimental obser ...
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Extrachromosomal DNA



Extrachromosomal DNA is any DNA that is found outside of the nucleus of a cell. It is also referred to as extranuclear DNA or cytoplasmic DNA. Most DNA in an individual genome is found in chromosomes but DNA found outside of the nucleus also serves important biological functions.In prokaryotes, nonviral extrachromosomal DNA is primarily found in plasmids whereas in eukaryotes extrachromosomal DNA is primarily found in organelles. Mitochondrial DNA is a main source of this extrachromosomal DNA in eukaryotes. Extrachromosomal DNA is often used in research of replication because it is easy to identify and isolate.Extrachromosomal DNA was found to be structurally different from nuclear DNA. Cytoplasmic DNA is less methylated than DNA found within the nucleus. It was also confirmed that the sequences of cytoplasmic DNA was different from nuclear DNA in the same organism, showing that cytoplasmic DNAs are not simply fragments of nuclear DNA.In addition to DNA found outside of the nucleus in cells, infection of viral genomes also provides an example of extrachromosomal DNA.
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