• Study Resource
  • Explore Categories
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
Understanding the role of markers in locating genes: Flowering Time
Understanding the role of markers in locating genes: Flowering Time

... Statistical analysis using student t-test The task of the students is to perform a two-tailed student t-test on each of the markers in a given data set to determine which biomarker is significantly linked with the gene or QTL associated with flowering time. It will provide the students the opportuni ...
Julia Louise Harris Behnfeldt Dissertation Defense Booklet
Julia Louise Harris Behnfeldt Dissertation Defense Booklet

... Kay Huebner PhD ...
JOIN2004 Universidade do Minho
JOIN2004 Universidade do Minho

... Regular expressions are a language within the Perl language that describe many kinds of patterns in strings, e.g. motifs in DNA. ...
Magnusiomyces capitatus (de Hoog et al.) de Hoog et Smith
Magnusiomyces capitatus (de Hoog et al.) de Hoog et Smith

A new FISH protocol with increased sensitivity for
A new FISH protocol with increased sensitivity for

... both on and out of the nuclei (Morais-Cecilio et al., 1997). Table 1, which shows the percentage of labelled nuclei, gives an estimation of the hybridization efficiency, that is between 45% and 70% depending on the probe and on the material. Table 2 shows the distribution of the number of spots per nu ...
1 Today: Genetic and Physical Mapping Sept 2. Structure and
1 Today: Genetic and Physical Mapping Sept 2. Structure and

... Enter Punnett, Bateson and Saunders (1905), who examined two other traits (flower color & pollen shape) in pea plants. ...
Expedient synthesis of 1,2,4-triazolin-3
Expedient synthesis of 1,2,4-triazolin-3

Topic 5 – Mutations and Genetic Variation PreClass Reading
Topic 5 – Mutations and Genetic Variation PreClass Reading

... o Occur as a result of DNA replication o Usually an enzyme checks the new DNA strands for errors in the replication       process (but it can miss some) ­ Induced mutations o Arise from exposure to mutagenic agents (something that causes a mutation) o Eg. UV radiation, X­rays, certain chemicals ...
slides
slides

Antifungals - Website of Neelay Gandhi
Antifungals - Website of Neelay Gandhi

... a. Presynaptic inhibition- Release of Ach diminishes and contraction “fades” b. Postsynaptic inhibition- Blocks Ach at receptor. This is a competitive block therefore increased Ach can reverse this. Depolarizing-Competitive agonist that binds to and activates the NMJ receptor but inactivates it by k ...
Microarray Analysis 1
Microarray Analysis 1

... protect against this, we dampen the effect of outliers by using the Tukey bi-weight mean. PM-MM values that are a number of standard deviations away from the mean are given low weights in accordance with the graph shown here. Individual PM-MM data are multiplied by the weight factor before calculati ...
Cells, Development, Chromosomes
Cells, Development, Chromosomes

what is mutation?
what is mutation?

... Mutations classified according to their effects on the protein (or mRNA) produced by the mutant gene (mutations in ORFs) 1. Silent Mutations (synonymous mutations). Since the genetic code is degenerate, several codons produce the same amino acid. Especially, third base changes often have no effect ...
Molecule of the Month: AgrA DNA Binding Domain AgrA is the
Molecule of the Month: AgrA DNA Binding Domain AgrA is the

... bases at three points: R233 and H169 make contacts in the major groove of the same face of DNA while N201 makes indirect contact with the minor groove between the other points of contact (Figure 4). Only R233 and H169 actually make direct contact with DNA bases – N201 makes contact via the phosphate ...
Promega Notes: Separate Isolation of Genomic DNA and Total RNA
Promega Notes: Separate Isolation of Genomic DNA and Total RNA

... Analysis of RNA is important for many studies including cellular development, responses to environmental stimuli and disease states. Promega's SV Total RNA Isolation System provides a rapid and safe method for the purification of high quality total RNA. The SV RNA System is based on a silica membran ...
Leture 19, work session 12
Leture 19, work session 12

... cell that the chromosomes absorb. It is this ability to absorb a colored dye that gives the chromosome its name, which means “colored body”. ...
Tutorial17_02
Tutorial17_02

... [Andy 10/23: Please make this change.] 3. I would like to see us shrink the final built graphic of 17.2.3 (plasmid circle with excerpted region at upper right) and give a little more white space between the scroll bar and the bottom of the graphic. It’s uncomfortably close right now. I say shrink th ...
Leukaemia Section t(11;19)(q23;p13.3) MLL/ACER1 Atlas of Genetics and Cytogenetics in Oncology and Haematology
Leukaemia Section t(11;19)(q23;p13.3) MLL/ACER1 Atlas of Genetics and Cytogenetics in Oncology and Haematology

... FRYC domains of native MLL associate MLL-N and MLL-C in a stable complex; they form a multiprotein complex with transcription factor TFIID. MLL is a transcriptional regulatory factor. MLL can be associated with more than 30 proteins, including the core components of the SWI/SNF chromatin remodeling ...
Chromosomes
Chromosomes

... • Have two identical arms • Two p’s or two q’s and not the other Ring chromosomes: • Telomeres are lost, or don’t function • So one end of chromosome attaches to other end forming a ring ...
Fluoroquinolones
Fluoroquinolones

... http://www.rxlist.com/neggram-drug.htm ...
Finding Regulatory Motifs
Finding Regulatory Motifs

... • A microarray experiment showed that when gene X is knocked out, 20 other genes are not expressed. • Motivating Question: How can one gene have such drastic effects? DNA Microarray ...
Nitrosation of aspartic acid, aspartame, and glycine ethylester
Nitrosation of aspartic acid, aspartame, and glycine ethylester

... Preussmann, 1986; Challis et al., 1987). However, the effect of the side chain on the preceding steps is not known. In this report, the nitrosation of amino acids and derivatives, including the artificial sweetener aspartame, is investigated in vitro in order to determine the rate of nitrosation. Th ...
Chromatin Structure Is a Focus for Regulation 30.2
Chromatin Structure Is a Focus for Regulation 30.2

... – Results in alteration of the position of a particular sequence on the nucleosomal suface ...
Biology Prokaryotes: The First Life on Earth
Biology Prokaryotes: The First Life on Earth

... Archaea were classified as bacteria until very recently. In 1977, they were separated from bacteria into their own domain, or grouping. Archaea Many archaea are extremophiles, organisms that live in environments where life had been considered impossible. They have be found living in areas of extreme ...
! Mendel`s Law of Independent Assortment
! Mendel`s Law of Independent Assortment

... see that each of these is ¼ of the total number of squares. How do we get the phenotypic results? The sum rule of probability tells us that when the same event can occur in more than one way, we can add the results. Because 1, 2, and 3 all result in unattached earlobes, we add them up to know that t ...
< 1 ... 50 51 52 53 54 55 56 57 58 ... 492 >

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.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report