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AP Biology
AP Biology

... genes are on chromosomes but is it the protein or the DNA of the chromosomes that are the genes? § initially proteins were thought to be genetic material… Why? What’s so impressive about proteins?! ...
Changes in the genetic material (DNA)
Changes in the genetic material (DNA)

... off & is reinserted backwards 4. Translocation: When one part of a chromosome breaks off and attaches to another chromosome. *transposable elements – chunks of DNA that can move around in the same or different chromosomes 5. Non-disjunction: Means “not coming apart”; when homologous chromosomes fail ...
Way to Glow! Teacher Package
Way to Glow! Teacher Package

... Bacterial transformation is the process by which a bacterium takes up and expresses foreign genetic material (DNA), thus acquiring a new trait(s). In this lab, you will be able to insert the GFP (Green Fluorescent Protein) gene, obtained from the bioluminescent jellyfish Aequorea victoria, into the ...
Array comparative genomic hybridization (array
Array comparative genomic hybridization (array

... In principle, both karyotyping and arrays are genome-wide technologies which can be used to assess the presence of genomic imbalance such as CNVs. Although they may look like very different technologies, the primary difference between them is in the resolution, which is a measure of the level of mag ...
GENETIC ENGINEERING - PLASMIDS, EPISOMES
GENETIC ENGINEERING - PLASMIDS, EPISOMES

... their choosing and used the new vectors to insert these genes into the DNA of living organisms. Genetic engineers believe they can improve the foods we eat by doing this. For example, tomatoes are sensitive to frost. This shortens their growing season. Fish, on the other hand, survive in very cold w ...
Frameshift Mutations
Frameshift Mutations

A comparison of DNA quantification values obtained by
A comparison of DNA quantification values obtained by

Slide 1
Slide 1

... 300 – 500 nucleotides to nascent RNA chains. Very little new initiation occurs. By hybridizing the labeled RNA to the cloned DNA for a specific gene (A in this case), the fraction of total RNA produced from that gene (i.e., its relative transcription rate) can be measured. [See J. Weber et al., 1977 ...
Topic 3 and 8 Sample Multiple Choice Questions
Topic 3 and 8 Sample Multiple Choice Questions

... have the same phenotype as the parent. What can be concluded from this result? a. the parent is heterozygous for the trait b. the trait being inherited is polygenic c. the parent is homozygous dominant for the trait d. the parent is homozygous recessive for the trait ...
Lab23
Lab23

... PCR must have controls! 1. purified small pox DNA: confirms primers work on small pox to produce expected size, shows expected product(s) (positive control) 2. purified monkey pox DNA: confirms primers work on monkey pox to produce expected size, shows expected product(s) (positive control) 3. unin ...
PartThreeAnswers.doc
PartThreeAnswers.doc

... 20 to 250 A's to the free 3' end, generating the 3' poly(A) tail. The mutation would prevent cleavage and polyadenylation at the usual site, which could have two different consequences. If the transcript is not polyadenylated, it will be quite unstable and the steady state levels of mRNA will be ver ...
Lysis of shiga toxin-producing Escherichia coli by
Lysis of shiga toxin-producing Escherichia coli by

... syndrome (HUS). E. coli strains that can express the shiga toxin gene (Stx 1 or Stx 2) are responsible for causing this foodborne illness, serotype O157:H7 being one of the most common. Of those who become infected with shiga toxin-producing E. coli (STEC), 5%-10% are expected to develop HUS, especi ...
Tissue DNA extraction and PCR determinations
Tissue DNA extraction and PCR determinations

... Tissue DNA extraction and PCR determinations DNA extraction Genomic DNA was extracted from 50 - 100 mg of maternal and foetal tissue samples and 200 µL of foetal fluids using the commercial kit Maxwell® 16 Mouse Tail DNA Purification Kit, developed for the automated Maxwell® 16 System (Promega, Wis ...
Intest Aid IB - SpeechNutrients.eu
Intest Aid IB - SpeechNutrients.eu

... The DNA in a cell consists of a long pattern made up of four different nucleotide bases. ...
Biology Keystone Review.2016.Part 2
Biology Keystone Review.2016.Part 2

... a. independent assortment – genes segregate independently and do not influence each other’s inheritance i. the principle of independent assortment states that genes for different traits can segregate independently during the formation of gametes 12. Some alleles are neither dominant nor recessive, a ...
12.3 Transcription and Translation PPT
12.3 Transcription and Translation PPT

... rest of the cell. ...
Unit 1 Topic 5 - Holy Cross Collegiate
Unit 1 Topic 5 - Holy Cross Collegiate

... objects. Each colour or object will represent one of the following parts of DNA: phosphate, ...
BDOL Interactive Chalkboard
BDOL Interactive Chalkboard

... From DNA to Protein • Genes are small sections of DNA. Most sequences of three bases in the DNA of a gene code for a single amino acid in a protein. • Messenger RNA is made in a process called transcription. The order of nucleotides in DNA determines the order of nucleotides in ...
DNA damage studies in cases of Trisomy 21 using Comet Assay
DNA damage studies in cases of Trisomy 21 using Comet Assay

... Figure 2A: Comets observed in Cases of Down’s syndrome 20X Silver Nitrate ...
Linkage II
Linkage II

... the problem. If you later find a contradiction, try one of the other orders. 4b. Determine whether a DCO with your arrangement will produce the observed DCO phenotypes. – You will encounter a contradiction unless you have chosen the correct gene order. Keep trying until you get the right one. ...
gen-305-16-hw-4-key
gen-305-16-hw-4-key

ES Cell Targeting Handbook
ES Cell Targeting Handbook

... primers are juxtaposed by homologous recombination having occurred. In order to test the PCR conditions a control vector will need to be made. This will also serve as a positive control for the ES cell screening. It should include the positive selection cassette in the same direction and site as the ...
DNA notes
DNA notes

...  DNA degraded to fragments only a few hundred base pairs in length can serve as effective templates for amplification.  Large numbers of copies of specific DNA sequences can be amplified simultaneously with multiplex PCR reactions.  Commercial kits are now available for easy PCR reaction setup an ...
Unusual Pattern Detection in DNA Database Using KMP Algorithm
Unusual Pattern Detection in DNA Database Using KMP Algorithm

... blood supply, travel to a different site, and start growing in a different organ. This process is referred to as metastasis. It is usually the metastatic growth which kills the organism. ...
A = T
A = T

... discovery work that led to the understanding of the structure of DNA It was in Randall's lab that she crossed paths with Maurice Wilkins. She and Wilkins led separate research groups and had separate projects, although both were concerned with DNA. When Randall gave Franklin responsibility for her D ...
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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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