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DNA Technology Notes
DNA Technology Notes

... This works because all organisms use the same genetic code  read genes the same ...
PowerPoint from Class - Bryn Mawr School Faculty Web Pages
PowerPoint from Class - Bryn Mawr School Faculty Web Pages

... fragments are attracted to each other by weak hydrogen bonds. AAT T C ...
2: Introduction
2: Introduction

... of the 20th century, it was clear that chromosomes were of central importance to the life history of the cell, acting in some unspecified manner as the vehicle for the Mendelian gene. If this conclusion was strongly implied by the events of cell division, it became obvious when reproduction in whole ...
Document
Document

... • Operon: a set of genes that are transcribed from the same promoter and controlled by the same operator site and regulatory proteins. • Regulon: a set of genes (and/or operons) expressed from separate promoter sites, but controlled by the same regulatory molecule. Global regulons may coordinate exp ...
Week 3 Pre-Lecture Slides
Week 3 Pre-Lecture Slides

... •  What would happen to transcription if the -10 and -35 boxes were switched? What if the +1 was a different base? What if the termination sequence was lost? •  There are four channels in the RNA polymerase protein leading from the core to the outside. Name each of these channels usefully based on t ...
Mapping the Body.indd
Mapping the Body.indd

... b) Help the bacteria to not be eaten by immune system cells. c) Help the bacteria to reproduce. d) Help the bacteria to find food. e) both a and b f) both c and d 64) True or False? Gram negative bacteria are pathogens, while Gram positives are beneficial and many live in our gut. 65) True or False? ...
Quizzes
Quizzes

... is once every 250 bp. The insert size for a genomic library in a lambda vector is typically about 20kb. However, inserts for the library are frequently prepared with a 4-hitter. Explain. A partial digest with a 4-hitter allows you to select the size range you want. If two lambda left or two lambda r ...
Enzymes - SAVE MY EXAMS!
Enzymes - SAVE MY EXAMS!

NUCLEIC ACIDS 3115
NUCLEIC ACIDS 3115

... DNA and RNA are examples of the nucleic acids. Interesting Scientific Fact: A human being has about 100,000 genes. Function of DNA, RNA DNA has 1 important function. Its job is to store and semd the correct genetic information from 1 generation to the next - from parent to child. RNA has several fun ...
Genetic Changes - Down the Rabbit Hole
Genetic Changes - Down the Rabbit Hole

... Significance of Mutations Most are neutral • Eye color • Birth marks • Some are harmful • Cystic Fibrosis • Down Syndrome • Some are beneficial • Sickle Cell Anemia to Malaria • Immunity to HIV ...
Genetics Debate - Region 11 Math And Science Teacher Partnership
Genetics Debate - Region 11 Math And Science Teacher Partnership

... 1) Cells are removed from the parent plant, they grow on a special medium-Single cells, plant cells without cell walls and pieces of leaves can often be used to generate a new plant on culture media given the required nutrients and hormones. 2) The gene then transferred into the plant cells by: - el ...
PCR - Michigan State University
PCR - Michigan State University

... genome. These regions contain runs of short, repeated sequences (known as variable number of tandem repeat (VNTR) sequences) . The number of repeats can vary from 4-40 in different individuals. • Primers are chosen that will amplify these repeated areas and the genomic fragments generated give us a ...
Name - Planet Ward
Name - Planet Ward

...  Multicellular with collagen holding cells together  Bilateral  Blastula opens mouth first  Has a chitin exoskeleton that it sheds as it gets larger  Body separated into two segments  A pair of appendages on the head called "chelicerae" used for pulling food to mouth. ...
Lab #1: Alu Lab, Part 1
Lab #1: Alu Lab, Part 1

... PCR is conducted in three steps: 1) Denature the template DNA, 2) Allow the primers to anneal, and 3) Extend (copy) the template DNA. In the first step, the template DNA is heated up to break the hydrogen bonds holding the two strands together. This allows each strand to serve as a template for gene ...
enzymes and vectors
enzymes and vectors

... • The names of restriction enzymes consist of a three-italic-letter abbreviation for the host organism. • For example, restriction enzyme EcoRⅠis from Escherichia coli. • The first three letters in the name of the enzyme consist of the first letter of the genus (E) and the first two letters of the ...
DNA methylation
DNA methylation

... Epigenesis is an old word which has more recently been used to describe the differentiation of cells from their initial totipotent state in embryonic development. When Waddington coined the term the physical nature of genes and their role in heredity was not known; he used it as a conceptual model o ...
KS4 Chromosomes, Genes and DNA
KS4 Chromosomes, Genes and DNA

... What are little girls and boys made of? Sugar and spice and everything nice; that’s what little girls are made of. Slugs and snails and puppy dogs’ tails; that’s what little boys are made of. ...
03-131 Genes Drugs and Diseases Problem Set 7 Due November 1, 2015
03-131 Genes Drugs and Diseases Problem Set 7 Due November 1, 2015

...  Send comments/suggestions to me ([email protected]) for improvements. 1. (14 pts) Go to the Jmol page for his problem set. You will view a structure of the lac repressor “headpiece”, or the piece of the protein that just binds to the DNA. i) What other functional parts of the protein are not sho ...
Comparison of Deoxyribonucleic Acid Homologies of Six Strains of
Comparison of Deoxyribonucleic Acid Homologies of Six Strains of

... equipped with a tapered microtip) and then adjusted to a phosphate buffer concentration of 0.12 M (pH 6.8). The DNA was boiled for 10 rnin and placed in a 60°C water bath for 5 min, and the phosphate buffer concentration was reduced to 0.03 M with distilled water at 60°C. The DNA was then loaded ont ...
Nucleic Acids
Nucleic Acids

... 3. DNA polymerase III continually adds deoxynucleotide phosphates onto the end of the primer to form the chain extension. This requires ATP. 4. On the lagging strand there are many RNA primers that are added to various points on the template strand. Theses are acted on by DNA polymerase III to prod ...
Modeling Genetic Engineering Lab
Modeling Genetic Engineering Lab

... The enzyme cards illustrate a short DNA sequence that each enzyme can cut. Compare the base sequence on each enzyme card with the base sequence of the plasmid. Some restriction enzymes may be able to cut open the plasmid in multiple locations while others may not be able to cut open the plasmid at a ...
幻灯片 1
幻灯片 1

... Select positive from master plate Probe with 32p-labled DNA complementary to gene of interest Expose to film ...
Comparison of Deoxyribonucleic Acid Homologies of Six Strains of
Comparison of Deoxyribonucleic Acid Homologies of Six Strains of

... equipped with a tapered microtip) and then adjusted to a phosphate buffer concentration of 0.12 M (pH 6.8). The DNA was boiled for 10 rnin and placed in a 60°C water bath for 5 min, and the phosphate buffer concentration was reduced to 0.03 M with distilled water at 60°C. The DNA was then loaded ont ...
Dangerous Ideas and Forbidden Knowledge, Spring 2005 Lab 2
Dangerous Ideas and Forbidden Knowledge, Spring 2005 Lab 2

... drop of blood, a single hair follicle, or a cheek cell and make enough to study. Prior to PCR, this would have been impossible! This dramatic amplification is possible because of the structure of DNA, and the way in which cells naturally copy their own DNA. DNA in our cells exists as a double-strand ...
Self-Organizing Bio-structures
Self-Organizing Bio-structures

...  10 bases/ turn  3.4 nm/ turn ...
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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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