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SBI4U- Molecular Genetics
SBI4U- Molecular Genetics

... Recent research indicates that in some bacteria, when an anticodon attempts to hydrogen bond to a codon, two parts of the ribosome (called A1492 and A1493) change shape and check that the match is correct (ie. That the corresponding bases are complementary). There is also evidence that an antibiotic ...
Sunflower DNA extraction for RFLP and PCR
Sunflower DNA extraction for RFLP and PCR

... uL ddH2O or 1x TE (10 mM Tris-HCl, pH 8.0; 1 mM EDTA, pH 8.0, autoclaved); put the DNA in 50°C incubator for 1 or 2 hrs will speed this process. Measure the DNA concentration, which should be around 0.5-1 μg/μL. Check the DNA quality on 1.0% agarose gel. An intact band should be observed around 50-8 ...
DNA to RNA
DNA to RNA

... "For it is not cell nuclei, not even individual chromosomes, but certain parts of certain chromsomes from certain cells that must be isolated and collected in enormous quantities for analysis; that would be the precondition for placing the chemist in such a position as would allow him to analyze [t ...
Social media policy
Social media policy

... The number of bases that are read at one time (that is the number of letters that will appear in each read). This differs between technologies, so optimum fragment length varies. Recessive allele A gene variant in one copy of a pair of genes that will not affect the individual. Reference genome An e ...
Slide 1
Slide 1

... flank two selectable marker genes is inserted into the chloroplast genome through homologous recombination, thereby transforming the native plastome into a TRANSPLASTOME (a). One of the selectable genes (aadA) is designed for exclusive expression in the chloroplast and incorporation of this marker c ...
Grade 9 Science - hrsbstaff.ednet.ns.ca
Grade 9 Science - hrsbstaff.ednet.ns.ca

... Explain the importance of using precise language in science and technology. (109-14) Illustrate and describe the basic processes of mitosis and meiosis (304-11). Distinguish between sexual and asexual reproduction in representative organisms (305-2) Compare sexual and asexual reproduction in terms o ...
DNA and Evolution
DNA and Evolution

EOC Review Packet #2
EOC Review Packet #2

... • In humans there is a disease called Phenylketonuria (PKU)which is caused by a recessive allele. People with this allele have a defective enzyme and cannot break down the amino acid phenylalanine. This disease can result in mental retardation or death. Let “E” represent the normal enzyme. Also in h ...
DNA
DNA

... • Construct the chip from a DNA library – Inserts of individual clones are amplified by PCR and spotted in a regular pattern on a glass slide or nylon membrane. • Extract total mRNA from two samples that we would like to compare (e. g., yeast cells before and after osmotic shock). • Using reverse t ...
Chapter 17 Nucleotides, Nucleic Acids, and Heredity
Chapter 17 Nucleotides, Nucleic Acids, and Heredity

... the transmission of hereditary information took place in the nucleus, more specifically in structures called chromosomes. • The hereditary information was thought to reside in genes within the chromosomes. • Chemical analysis of nuclei showed chromosomes are made up largely of proteins called histon ...
Lab Module 8 - philipdarrenjones.com
Lab Module 8 - philipdarrenjones.com

... structure of RNA is similar to DNA with a few small exceptions. For one thing, unlike DNA, most types of RNA, including mRNA, are single-stranded and contain no complementary strand. Second, the ribose sugar in RNA contains an additional oxygen atom compared with DNA. Finally, instead of the base th ...
Chromosome, genes and DNA Task 1 chromos
Chromosome, genes and DNA Task 1 chromos

RNA - Gulf Coast State College
RNA - Gulf Coast State College

... called a codon. • Each codon codes for a 1 amino acid. • The codon sequence codes for an amino acid using specific rules. These specific codon/amino acid pairings is called the Genetic Code. ...
Forensics of DNA
Forensics of DNA

... HISTORY OF DNA ANALYSIS ...
Voices - Indiana University Bloomington
Voices - Indiana University Bloomington

... simple strategy for matching genes to only some regulatory elements, which involves the spatial organization and folding of chromosomes inside the nucleus. In Drosophila, mouse, and human nuclei, chromosomes are spatially compartmentalized. Using 5C and Hi-C technologies, it has been shown that chro ...
RNA - Gulf Coast State College
RNA - Gulf Coast State College

... called a codon. • Each codon codes for a 1 amino acid. • The codon sequence codes for an amino acid using specific rules. These specific codon/amino acid pairings is called the Genetic Code. ...
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Biotechnology_S14

... Plasmid is removed from bacteria cell and is cut with a restriction enzyme. ...
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gene expression_hour 1 - study
gene expression_hour 1 - study

... DNA Replication Model… DNA Replication Process of copying a double stranded DNA strand which is the two resulting double strands are identical and each of them consist of one original and one newly synthesize strand. ...
Summary notes on Genetics and Gene expression
Summary notes on Genetics and Gene expression

... A nonsense mutation –base substitution results in a stop codon being transcribed on to mRNA so polypeptide chain is stopped prematurely and will often not function A mis-sense mutation –base substitution results in a different amino acid being coded for which could change the tertiary structure A Si ...
The Genetic Science Glossary - Canadian Council of Churches
The Genetic Science Glossary - Canadian Council of Churches

... specific organisms based on the expression of a desired trait. Example: If a farmer wants to grow bigger tomatoes, selecting and then planting only the seeds of the biggest tomatoes the farmer grows might select the tomatoes with the genes that cause them to be larger. This could result in a crop of ...
Chapter 1 Introduction and Overview
Chapter 1 Introduction and Overview

... have important implications in medical research. For example, at least 75% of the approximately 1,000 genes that have been associated with specific human diseases have highly similar sequences in both humans and D. melanogaster. Information learned from model organisms about particular biochemical p ...
DNA Replication - susanpittinaro
DNA Replication - susanpittinaro

... Raymond Gosling : lab assistant; actually took the picture Maurice Wilkins: 1st to attempt technique; set-up lab Franklin used ...
Lecture 2
Lecture 2

... Change in chromosome number of less than an entire genome. Change in genotype other than by recombination. Change in genotype solely by chance effects. Evolution at the population level; change in allele frequencies over generations. Evolution of chromosome number which is a multiple of some ancestr ...
Last Name: First Name: Per. _____ Parent Signature: Pre
Last Name: First Name: Per. _____ Parent Signature: Pre

... A mutation is a random change in DNA code that occurs during DNA replication or through a failure in repair mechanisms. The significance is that mutation is the primary source of genetic diversity – it is how we get brand new alleles. Genetic diversity is necessary for evolution through natural sele ...
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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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