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Microbes in Medicine and Research
Microbes in Medicine and Research

... DNA to RNA (Transcription) • In the nucleus, one region of DNA (one that contains a gene) is transcribed into RNA. This RNA is formally called messenger RNA (mRNA). • RNA differs from DNA in that it is single stranded, and does not contain the nucleotide Thymine (T), but instead contains Uracil (U) ...
Aim: What are some techniques used in DNA engineering?
Aim: What are some techniques used in DNA engineering?

... DNA from tiny amount of blood or semen found at the scenes of violent crimes, DNA from single embryonic cells for rapid prenatal diagnosis of genetic disorders, DNA of viral genes from cells infected with difficult-to-detect viruses such as HIV. ...
bio-of-cells-lent-restriction-enzymes-information-for-exam
bio-of-cells-lent-restriction-enzymes-information-for-exam

... Restriction enzyme mapping - determining the order of fragments produced by cutting a DNA molecule with a restriction enzyme. RFLP - restriction fragment length polymorphism, a difference in the size of a genomic DNA fragment produced by digestion with a particular enzyme. A useful DNA marker. RFLPs ...
RC 2 Student Notes
RC 2 Student Notes

... backbone and 4 nitrogen bases (A,T,C,G) The sequence of nitrogen bases in the DNA molecule of each organism makes the organism unique Is found in the nucleus of eukaryotic cells and in the cytoplasm of prokaryotic cells ...
Example Quiz
Example Quiz

... doing this step)? The goal was to remove the restriction enzyme from the DNA mixture. This was important as the next step was to ligate this DNA with the insert. If the EcoRI or HindIII was still present it would compete with the ligase activity (i.e., ligase would join the ends and then the EcoRI w ...
Label each of the following as homozygous or heterozygous
Label each of the following as homozygous or heterozygous

...  In dogs, gum coloration is co-dominant, with black coloration, black & pink spotted and pink.  You have a lovely spotted gummed Labrador retriever who has just had 8 pups. Four of the pups have spotted like your dog, and 4 have black gums. 31. What is the likely phenotype of the sneaky neighbor ...
Genomic_DNA - McMaster Chemistry
Genomic_DNA - McMaster Chemistry

... Create new comment This Technical Tip was first published in Trends in Genetics (1995) 11, 217-218 Many Gram-positive bacteria are used in industrial processes (e.g. Bacillus subtilis, lactococci or streptomyces), and the genetic manipulation of these organisms requires the preparation and analysis ...
Recombinant and Synthetic Nucleic Acid Activity Registration
Recombinant and Synthetic Nucleic Acid Activity Registration

... species), or when transferred to another host by well established physiological means. Consist entirely of DNA from an eukaryotic host including its chloroplasts, mitochondria, or plasmids (but excluding viruses) when propagated only in that host (or a closely related strain of the same species). ...
Gene Technology
Gene Technology

... Steps in a genetic engineering experiment DNA piece is cut from both organisms using enzymes. Piece is placed inside a vector (another organism used to carry a gene to another cell). Examples include viruses, yeast and plasmids. 2. The pieces are “glued” together producing recombinant DNA 3. Many c ...
chapter 11, 12, 13 practice questions
chapter 11, 12, 13 practice questions

... change? What kind of mutation is this (point mutation or frameshift mutation)? F) Delete the 7th base in the original strand of DNA. How many amino acids are affected in the change? What kind of mutation is this (point mutation or frameshift mutation)? 2. Refer to Figure 11.12 on pg. 300 and describ ...
Document
Document

... •Charge - The greater the charge the more pull. •Size – Bigger pieces are slower, smaller are faster. •Shape - Coiled is slower straight is faster. •The negatively charged particles move toward the positive electrode while the positive charge particles Move toward the negative electrode. Agarose mak ...
Word version
Word version

... 1 - The sugar units in RNA are ribose as compared to DNA's deoxyribose. 2 - RNA does not bind to the nucleotide base Thymine, but to Uracil (U) instead (RNA also contains the other three bases: A, C and G) 3 - RNA exists as a single-stranded molecule. Because of the extra hydroxyl group on the sugar ...
Document
Document

... supporting pilars ...
Genetic Engineering
Genetic Engineering

... same enzyme. In practice, the vector should have only one site for cleavage with the relevant enzyme, since otherwise; the correct product could only be formed by the ligation of three or more fragments, which would be very inefficient. There are many possible products from this ligation reaction, a ...
Genetic Engineering and Recombinant DNA
Genetic Engineering and Recombinant DNA

... Now we can easily copy or amplify DNA in the lab. 1. Produce two oligonucleotides that match up with the DNA before and after the DNA you want to copy. 2. Heat DNA to break the hydrogen bonds and open the DNA. ...
Lecture TandT
Lecture TandT

... From Nucleotides to Amino Acids: An Overview – Genetic information in DNA is transcribed into RNA and then translated into polypeptides (proteins). ...
Topic 7 The Discovery of DNA & Its Roles
Topic 7 The Discovery of DNA & Its Roles

... IIIC. Features of Gene Expression in Eukaryotes  Transcription occurs in the ...
Biotechnology Cloning of a Gene Cloning a human gene
Biotechnology Cloning of a Gene Cloning a human gene

... • Gene cloning is the engineering and thus production of many identical copies of a genes ...
File
File

DNA Technology
DNA Technology

... evolutionary relationship among species of ...
Epigenetic Clock and Biological Age Steve Horvath, Professor of
Epigenetic Clock and Biological Age Steve Horvath, Professor of

... Steve Horvath, Professor of Human Genetics and Biostatistics, University of California, Los Angeles The DNA methylation based biomarker of aging known as the "epigenetic clock" can be used to measure the DNA methylation (DNAm) age of any human (or chimpanzee) tissue, cell type, or fluid that contain ...
Timeline
Timeline

... Canadian‐born American bacteriologist Oswald Avery and colleagues discover that DNA carries genetic information. American chemist Linus Pauling shows that sickle cell anemia is a “molecular disease” resulting from a mutation in the protein molecule hemoglobin. Artificial insemination of livestock us ...
MITOCHONDRIA BIOLOGY - web.biosci.utexas.edu
MITOCHONDRIA BIOLOGY - web.biosci.utexas.edu

... circular, usually (see below) no histones low copy number per organelle inherited uniparentally (usually) ...
Cloning and selection
Cloning and selection

... When do the cutting and sticking of plasmid and foreign DNA there are several possible outcomes 1. Successful sticking of the plasmid and foreign DNA 2. Recircularization of plasmid without the foreign DNA 3. Circulization of plasmid with other plasmids or several inserts to make huge circular mol ...
Summary
Summary

... Simulations of the structure of H-NS under some of these conditions revealed switching between a bridging capable and incapable form of H-NS. It is not always a trivial task to understand and quantify the effects of proteins that bind to DNA. In recent years many new biophysical techniques have been ...
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Cre-Lox recombination



In the field of genetics, Cre-Lox recombination is known as a site-specific recombinase technology, and is widely used to carry out deletions, insertions, translocations and inversions at specific sites in the DNA of cells. It allows the DNA modification to be targeted to a specific cell type or be triggered by a specific external stimulus. It is implemented both in eukaryotic and prokaryotic systems.The system consists of a single enzyme, Cre recombinase, that recombines a pair of short target sequences called the Lox sequences. This system can be implemented without inserting any extra supporting proteins or sequences. The Cre enzyme and the original Lox site called the LoxP sequence are derived from bacteriophage P1.Placing Lox sequences appropriately allows genes to be activated, repressed, or exchanged for other genes. At a DNA level many types of manipulations can be carried out. The activity of the Cre enzyme can be controlled so that it is expressed in a particular cell type or triggered by an external stimulus like a chemical signal or a heat shock. These targeted DNA changes are useful in cell lineage tracing and when mutants are lethal if expressed globally.The Cre-Lox system is very similar in action and in usage to the FLP-FRT recombination system.
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