• 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
Genetic Variation Mutations
Genetic Variation Mutations

Mutation: The Source of Genetic Variation
Mutation: The Source of Genetic Variation

DNA Questions #4 Questions on the PCR Process:
DNA Questions #4 Questions on the PCR Process:

... c. Results cannot be seen but must be interpreted by a computer. ___Capillary__________________________ 66) Which of the following are true about the TPOX STR? (Choose all that apply) a. Every person has two alleles for TPOX b. TPOX alleles are sequences that code for important proteins. c. The alle ...
recombinant DNA. Lesson Overview
recombinant DNA. Lesson Overview

DNA Replication - Toronto District Christian High School
DNA Replication - Toronto District Christian High School

... DNA replication. The number of mutations that are actually passed on to new cells is quite small because special enzymes “proofread” the new strand of DNA for errors after replication occurs. Sometimes these enzymes can remove incorrect nucleotides and insert the correct one. Not every error can be ...
Macromolecule Review Guide
Macromolecule Review Guide

... 4. The following picture represents a chain of amino acids. What name is given to the type of bond that holds amino acids together? ...
What is the difference between basal and activated transcription?
What is the difference between basal and activated transcription?

You Light Up My Life
You Light Up My Life

... that catalyzes transcription a RNA polymerase initiates transcription at a promoter region in DNA. It recognizes a base sequence located next to the promoter as a template. It will link the nucleotides adenine, cytosine, guanine, and uracil into a strand of RNA, in the order specified by DNA. Fig. 1 ...
DNA - Doctor Jade Main
DNA - Doctor Jade Main

... • discovered DNA is double stranded helix • composed of two strands • wrapped around each other in helical formation • core -bases of one DNA strand bonded to bases in other strand • if think of DNA molecule as ladder – sugar-phosphate backbone would be sides of ladder – paired bases would be rungs ...
DNA
DNA

... Ribosomal RNA (rRNA)- the working “spine” of the ribosome Transfer RNA (tRNA)- the “decoder keys” that will translate ...
File
File

Lab #5a Mr. Green Genes-DNA Sequence
Lab #5a Mr. Green Genes-DNA Sequence

... C. Analysis of open reading frames—are these genes known? 1. Click on the green dot corresponding to the largest open reading frame. 2. In the panel near the top of the subsequent page, click on the BLAST button. BLAST stands for “Basic Local Alignment Search Tool.” This algorithm compares your seq ...
Cancer Drug Classes
Cancer Drug Classes

... Antimetabolites (anti-folates, pyrimidine and purine analogues) ...
Chapter 23 Lecture PowerPoint
Chapter 23 Lecture PowerPoint

... • In first step, 2 plasmids fuse, phage replication, forms a cointegrate – coupled through pair of Tn3 copies • Next is resolution of cointegrate, breaks down into 2 independent plasmids, catalyzed by resolvase gene ...
(2) Excision Repair
(2) Excision Repair

... • due to RecA binding ssDNA in lesions • could then bind to DNA Pol III complex passing through this area of the DNA • RecA no longer catalyzes cleavage of LexA (which is still being made) • so uncleaved LexA accumulates and turns the SOS system off ...
DNA
DNA

... The average human chromosome has DNA that contains 100 million base pairs DNA directs the production of proteins A protein is a polymer made of amino acids There are twenty known amino acids that are used to make thousands of proteins ...
Assignment 2 with Key
Assignment 2 with Key

... Due: Fri. October 30, 2015 (by 5 pm) ...
DNA polymerase - yusronsugiarto
DNA polymerase - yusronsugiarto

... - identification of various parts in natural organisms, -?more? ...
DNA Fingerprinting
DNA Fingerprinting

CHAPTER 3 ORGANIC CHEMISTRY
CHAPTER 3 ORGANIC CHEMISTRY

... – This shape change results in a change in function. (CJD &BSE, p. 56) ...
chapter 10
chapter 10

... b. three binding sites used during translation. c. four binding sites for tRNA. d. no binding sites since the proteins must detach. ____ 18. Transfer RNA a. carries an amino acid to its correct codon. b. synthesizes amino acids as they are needed. c. produces codons to match the correct anticodons. ...
LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034
LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

... 11. Outline the synthesis of a dipeptide. 12. What is Edman’s reagent? Describe its use in the determination of amino acid sequence in proteins. 13. Explain the Michaelis theory of enzyme catalysis. 14. Give the classification of lipids. Mention its biological importance. 15. Explain the types of pl ...
Homework 4
Homework 4

... 7. The site on the chromosome occupied by a gene is called a(n) a. allele. b. region. c. locus. d. type. e. phenotype. 8. Given the following parent strand sequence, what would the daughter strand sequence look like (Hint: refer to figure 8.10 and 8.12? 5´ – G C T A A C T G T G A T C G T A T A A G C ...
41. Situations in which one allele for a gene is not
41. Situations in which one allele for a gene is not

... the chromatids do not separate. b. it occurs during prophase. c. only two gametes may form instead of four. d. some gametes may have an extra copy of some genes. Which of the following can be observed in a karyotype? a. genes c. alleles b. a change in a DNA base d. an extra chromosome The chemical f ...
Review of Advanced DNA Structure and Function PPT
Review of Advanced DNA Structure and Function PPT

... • Old Histones are distributed to daughter strands • More Histones must be synthesized • Occurs specifically in S phase • Histones loaded by chaperone proteins • Nucleosome assembly protein • Chromatin assembly factor • Any Histone covalent modification is then re-established ...
< 1 ... 229 230 231 232 233 234 235 236 237 ... 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 © 2026
  • DMCA
  • Privacy
  • Terms
  • Report