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Beyond the double helix
Beyond the double helix

... active genes in a single cell.This could be used, for example,to help pathologists to examine a breast biopsy or a suspect skin mole. The team created 11 fluorescent tags of different colours, and washed them over human cells.Each sticks to the molecules produced by one specific gene,revealing how a ...
DNA
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... sugar and phosphate 5. Four different kinds of nitrogen bases a. Adenine – purine – double ring molecules b. Guanine – purine – double ring molecules c. Thymine – Pyrimidines – single ring ...
GenTech Unit 2 DNA
GenTech Unit 2 DNA

... sugar and phosphate 5. Four different kinds of nitrogen bases a. Adenine – purine – double ring molecules b. Guanine – purine – double ring molecules c. Thymine – Pyrimidines – single ring ...
Gene Technology – Revision Pack (B6)
Gene Technology – Revision Pack (B6)

... to another. The organism which receives the new gene is known as a transgenic organism. There are a number of steps taken in genetic engineering: STEP 1 – the desired characteristic is identified ...
DNA Know your Molecules
DNA Know your Molecules

... Removes RNA primers ...
DNA Structure and Sequencing - SP14
DNA Structure and Sequencing - SP14

... The size of the genome in one of the most well-studied prokaryotes, E.coli, is 4.6 million base pairs (approximately 1.1 mm, if cut and stretched out). So how does this t inside a small bacterial cell? The DNA is twisted by what is known as supercoiling. Supercoiling means that DNA is either under- ...
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File

... in the DNA strand where they interrupt the coding sequence of another gene, thus causing an incorrect protein or no protein to be formed. These are commonly known as “jumping genes”, and can even jump across species, such as from bacteria to plants! 2. Genetic Recombination – bacteria can transfer g ...
Study Guide A - WordPress.com
Study Guide A - WordPress.com

... MAIN IDEA: Proteins carry out the process of replication. 7. Circle all of the roles that proteins play during DNA replication. a. They help unzip the DNA strand. b. They hold the DNA strands apart. c. They attach nucleotides to the nucleus. d. They remove nucleotides from the DNA strands. e. They b ...
VI. Genetic Engineering or Recombinant DNA Technology
VI. Genetic Engineering or Recombinant DNA Technology

... 1. Cell walls are digested which leaves naked protoplasts 2. Protoplasts minus their walls can then fuse or hybridize 3. Hybrid cells can be selected for and cultured 4. Somatic hybrids are the result of a fusion from two different protoplasts E. Clonal Variants 1. Cells with slightly different char ...
Biotechnology Notes HONORS
Biotechnology Notes HONORS

... 1. Choose an organism to change, and one to obtain the gene from (host) 2. Choose a bacterial vector that will transform the gene incorporate gene into its own DNA 3. Gene Splicing Cleave (cut) the pieces of DNA of interest from the host organism restriction enzyme“cleaves” 4. Isolate the gene lo ...
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Biology 102 Lecture 11: DNA

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命題標頭紙 - 慈濟大學醫學資訊學系所
命題標頭紙 - 慈濟大學醫學資訊學系所

... 9. A BLAST search yields several hits. Among them, subject A with 95% identity and E-value = 0.1, and subject B with 65% identity and E-value = e-32. Which one is a better hit? Why? (5%) 10. Palindromes are DNA sequences in which the reverse complement is identical to the positive strand, such as GT ...
G19S Amino Acid code
G19S Amino Acid code

... Molecules of DNA carry the genetic instructions for protein formation. Converting these DNA instructions into proteins requires a series of coordinated steps in transcription and translation. 1. Complete column B by writing the correct mRNA codon for each sequence of DNA bases listed in the column m ...
Ch 13 Genetic Engineering
Ch 13 Genetic Engineering

... – Foreign DNA is joined to plasmid • Plasmid – small, circular DNA molecule • Genetic marker – a gene that makes it possible see which bacteria are carrying the plasmid (that is marked) and which bacteria are not. ...
ALE #7
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... d. Promoters – a section of DNA that indicates the start of a gene. When RNA polymerase binds to a promoter, transcription occurs e. Enhancers – these are sections of DNA that play a role in the regulation of gene expression. When activator proteins bind to enhancers, they assist other transcription ...
Replication, Transcription, and Translation
Replication, Transcription, and Translation

... instructions as the cells that preceded it. ...
Chapter 16 Molecular basis of inheritance
Chapter 16 Molecular basis of inheritance

... Only one primer is needed for replication of the leading strand, but many are required to replicate the lagging strand. An RNA primer must initiate the synthesis of each Okazaki fragment. ...
dna technology and genomics
dna technology and genomics

... 1) Explain how advances in recombinant DNA technology have helped scientists study the eukaryotic genome. 2) Describe the natural function of restriction enzymes and explain how they are used in recombinant DNA technology. 3) Explain how the creation of sticky ends by restriction enzymes is useful i ...
BIO208 Bacterial Genetics Worksheet 1 1. . Fill in: Transformation
BIO208 Bacterial Genetics Worksheet 1 1. . Fill in: Transformation

... q. Phage adsorption and phage packaging r. A cfu and a plaque ...
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PPT

...  The experimental design & construction of a non-regular graph by vertics and edges  A graph(5 vertices, 8 edges) for self-assembly  Vertex-edge specific sticky ends & WC complementarity ...
Gene Section CBFb (subunit b of core binding factor)
Gene Section CBFb (subunit b of core binding factor)

... CBF binds to a core motif of the DNA (herein the name); CBFb by itself does not contain any known DNA binding motif or any transcriptional activation domain; CBFa binds to DNA; CBFb increases CBFa's affinity to DNA by 5 to 10 fold; CBF is a transcription factor which regulates the expression of myel ...
Chapter 11 and 12 Genetics is the scientific study of heredity
Chapter 11 and 12 Genetics is the scientific study of heredity

... In each group, the hybrid plants only looked like one of the parents. For example, all of the hybrids were tall in the F1- none were short. From this observation, Mendel made 2 conclusions: 1. Traits are determined by genes. One gene with two different blueprints controlled each trait. Each form of ...
Chapter 6 Microbial Genetics
Chapter 6 Microbial Genetics

Lecture 7 Oct 10th
Lecture 7 Oct 10th

... DNA: deoxyribonucleic acids RNA: ribonucleic acids Genetic material sequenced after amplification using PCR (polymerase chain reaction) or used in fingerprinting approaches One study found that 6,000-10,000 unique genomes found in soil, compared to 40 cultured organisms ...
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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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