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Genome Organization
Genome Organization

... It has become clear that RNAi is also used for gene regulation. RNAi has also been turned into a very useful lab technique for suppressing the activity of specific genes. ...
Junk DNA indicted - Creation Ministries International
Junk DNA indicted - Creation Ministries International

p 1.) What is a sigma factor? Why does the cell contain multiple
p 1.) What is a sigma factor? Why does the cell contain multiple

... You have isolated three mutations that each map to the 4th codon of the polymerase gene. Define what each mutation is, and determine which mutations are the most likely to inactivate the bacterial polymerase. (6pts) Missense mutation: a base pair change that changes the codon for one amino acid to a ...
DNA - An overview - World of Teaching
DNA - An overview - World of Teaching

... • When X rays are focused through isolated macromolecules or crystals of purified molecules, the X ray are deflected by the atom of the molecules in specific patterns called diffraction patterns. • It provides the information about the organization of the components of the molecules. • Watson and Cr ...
Eng 2 Review for end of course exam-2012
Eng 2 Review for end of course exam-2012

... Describe the stages of meiosis? What is the end result? What is the purpose for the reduction of the chromosome number during meiosis? Synapsis Cytokinesis ...
Ch. 13: Presentation Slides
Ch. 13: Presentation Slides

... • TEs with long terminal repeats are called LTR retrotransposons because they transpose using an RNA transcript as an intermediate • Among the encoded proteins is an enzyme known as reverse transcriptase, which can “reversetranscribe,” using the RNA transcript as a template for making a complementar ...
Classroom Teacher Preparation Anatomy/Physiology 2: Mitosis
Classroom Teacher Preparation Anatomy/Physiology 2: Mitosis

... Asexual reproduction – reproduction in which offspring arise from a single parent organism; offspring will inherit genetic information from the parent organism only ...
Genetic Engineering
Genetic Engineering

... In order to obtain large quantities of the transformed bacteria which have grown and formed colonies, scientists take a sample and put it to grow in another culture medium containing nutrients. The genetic material the bacteria have produced then needs to be isolated, i.e. it has to be separated fro ...
Gene Expression
Gene Expression

... The third codon of mRNA (CAU) base-pairs with the anticodon (GUA) of a tRNA carrying the amino acid histidine (his). This tRNA enters the second tRNA binding site on the ...
Honors Biology 522 Second SEMES
Honors Biology 522 Second SEMES

... metastasis homologous chromosomes sex chromosomes diploid cells haploid cells zygote crossing over genetic recombination ...
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Mutations Worksheet

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RF cloning: A restriction-free method for inserting target genes into
RF cloning: A restriction-free method for inserting target genes into

... positive clones is directly correlated to the effectiveness of the restriction digests. To circumvent these limitations, different approaches have been taken to enhance cloning efficiency, such as positive selection, in which only colonies containing plasmids with inserts survive or discrimination o ...
IRAP (interretroelement amplified polymorphism)
IRAP (interretroelement amplified polymorphism)

... The plant nuclear genome consists of DNA divided among the chromosomes within the cell nucleus. Plant genomes contain coding and regulatory sequences for the genes and repetitive DNA (see Heslop-Harrison and Schmidt, Plant Nuclear Genomes, Encyclopaedia of Life Sciences 2007). Genomes are evolutiona ...
1. The cross AaBb x AaBb is called a
1. The cross AaBb x AaBb is called a

... b. he never published his work. c. there was no known physical basis for Mendel's "gene" concept at the time. d. it was found that Mendel cheated. e. none of these choices 7. Full pod shape (F) is dominant to constricted pod shape (f ), and yellow pod color (Y) is dominant to green pod color (y) in ...
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Using recombinant Cas9 nuclease to assess locus

... We strongly recommend wearing gloves and using nuclease-free tubes and reagents to avoid RNase contamination. Further recommendations for avoiding ribonuclease contamination can be found here: https://www.neb.com/tools-and-resources/usageguidelines/avoiding-ribonuclease-contamination Reactions are t ...
CELL SNAP - YourGenome.org
CELL SNAP - YourGenome.org

... An organelle that forms an extensive network of flattened, sacklike membranes known as cisternae. It extends out from the nuclear membrane into the cytoplasm of the cell and is involved in the production, folding and transport of proteins produced by the ribosomes on its surface. ...
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... expert. You may do this in any way that you wish. In effect, you will "teach" the class about your topic. Any handouts or overheads that you intend to use need to be given to your instructor in advance, so that copies can be made for everyone in the class. You need to be prepared to use your informa ...
PDQeX Standard - DNA Extraction
PDQeX Standard - DNA Extraction

... dilute HClO bleach on a swab. Wipe residual bleach off the surfaces using a second swab soaked with DNA-free water. ...
statgen8
statgen8

... If the test, on a sample of the family, has demonstrated linkage between the A and B loci, then one may want to estimate the recombination fraction for these loci. ...
Lec 19
Lec 19

... Host controlled restriction and modification phenomenon can be well explained with the following example. If a stock preparation of phage is allowed to grow upon E. coli strain C and this stock is then tried upon E. coli C and E. coli K, the titres observed on these two strains will differ by severa ...
overview - El Paso High School
overview - El Paso High School

... • Some chemicals add other groups to bases (e.g., benzopyrene adds a group to guanine and prevents base pairing). DNA polymerase will then add any base there. Radiation damages DNA: Ionizing radiation, such as X rays, creates free radicals—highly reactive—can change bases, break sugar phosphate bond ...
Genomics I - Faculty Web Pages
Genomics I - Faculty Web Pages

... – They determine probabilities that are used to calculate the lod score Probability of a certain degree of linkage Probability of independent assortment ...
Preventive Effect of Modified Citrus Pectin against Aluminium
Preventive Effect of Modified Citrus Pectin against Aluminium

Genomics I
Genomics I

... – They determine probabilities that are used to calculate the lod score Probability of a certain degree of linkage Probability of independent assortment ...
DNA repair disorders
DNA repair disorders

... reconstitute the proteins required to continue transcription. The cell has recombination mechanisms and these are used in meiosis, mitosis, gene rearrangements, for example antibody production, and DNA repair. Recombination repair is vital where both DNA strands have been damaged, or there has 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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