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Plasmids and DNA Digestion
Plasmids and DNA Digestion

... Vector: DNA (or RNA) used to artificially carry foreign material into another cell. Plasmid: Circular piece of double stranded DNA used as a vector for bacterial cells. A plasmid is a vector but not all vectors are plasmids. Multiple Cloning Site (MCS): A region of the plasmid containing many restri ...
BIOL 222 - philipdarrenjones.com
BIOL 222 - philipdarrenjones.com

... B) the leading strand is synthesized by adding nucleotides to the 3' end of the growing strand, and the lagging strand is synthesized by adding nucleotides to the 5' end C) the lagging strand is synthesized continuously, whereas the leading strand is synthesized in short fragments that are ultimatel ...
Biology-1 Exam Three There are a total of 68 questions on this exam
Biology-1 Exam Three There are a total of 68 questions on this exam

... a. amino acids b. monosaccharides c. nucleotides d. fatty acids. e. nucleic acids 42. If one strand of DNA is CGGTAC, the corresponding strand would be a. GCCTAG. b. CGGTAC. c. GCCAUC. d. TAACGT. e. GCCATG. 43. Which of the following statements regarding DNA is false? a. DNA uses the sugar deoxyribo ...
Photosynthesis - Mrs. Brenner's Biology
Photosynthesis - Mrs. Brenner's Biology

... • Genome - All the genetic information of an individual (or species) • Goals of the Human Genome Project  Determine the base pair sequence  Construct a map showing the sequences of genes on specific chromosomes ...
E1. A. Cytogenetic mapping B. Linkage mapping C. Physical
E1. A. Cytogenetic mapping B. Linkage mapping C. Physical

... E20. One possibility is that the geneticist could try a different restriction enzyme. Perhaps there is sequence variation in the vicinity of the pesticide-resistance gene that affects the digestion pattern of a restriction enzyme other than EcoRI. There are hundreds of different restriction enzymes ...
Document
Document

... E20. One possibility is that the geneticist could try a different restriction enzyme. Perhaps there is sequence variation in the vicinity of the pesticide-resistance gene that affects the digestion pattern of a restriction enzyme other than EcoRI. There are hundreds of different restriction enzymes ...
DNA Banks for Endangered Animal Species
DNA Banks for Endangered Animal Species

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DNA Unit Practice Questions and In
DNA Unit Practice Questions and In

Exam I - chem.uwec.edu
Exam I - chem.uwec.edu

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DNA 101 intro

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Origins of Sugars in the Prebiotic World
Origins of Sugars in the Prebiotic World

... • If the nucleophile is the 3’-OH group of another NTP, then a nucleic acid is generated: polymer of nucleotides – Oligomers (“oligos”)  short length (DNA/RNA polymers of long ...
Bchem 4200 Part13 - U of L Class Index
Bchem 4200 Part13 - U of L Class Index

... → Leaving the target side might also involve sliding etc. Sliding accelerates target site location: → under optimum conditions it allows for scanning of ~106 bases per binding event. → but it’s a random walk →the effective sliding distance is much shorter ~ 1000 bp → ionic conditions, in particular ...
11165_2014_9398_MOESM1_ESM
11165_2014_9398_MOESM1_ESM

... 8) The polymerase chain reaction (PCR) is similar to what reaction that occurs in all organisms? Transcription Translation Mutation DNA replication 9) In your own words describe what you think the term recombinant DNA means. 10) Isolated DNA can be used for the following (check all that apply): Dete ...
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PowerPoint Lecture Chapter 9

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1 CHAPTER I INTRODUCTION The nucleus of the cell contains our
1 CHAPTER I INTRODUCTION The nucleus of the cell contains our

... eluted from the column, with the first containing histone H1, but also histone H3 and histone H4, whose molecular weights were each less than that of histone H1 (see Figure 2). Histones H2A and H2B eluted in a second fraction, even though their molecular weights were more closely related to H3 and ...
Biotechnology
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Nucleic Acids and the Genetic Code
Nucleic Acids and the Genetic Code

... tightly coiled and folded. Eukaryotic DNA is associated with proteins called histones. Together, these form chromatin – the substance from which chromosomes are made. In prokaryotic cells, DNA is loose in the cytoplasm – there are no histones or chromosomes. 11 of 36 ...
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... • made up of amino acids • 20 amino acids • Chromosome • self-replicating structure of cells containing the cellular DNA that bears in its nucleotide sequence the linear array of genes ...
agarose gel - Bio
agarose gel - Bio

... gel pieces (> 200 mg). The melting/binding time was 8 minutes and elution time 5 minutes. The Copyright 2010 BN Products & Services Oy www.bnpands.com / www.bionobile.com All rights reserved ...
Answers to End-of-Chapter Questions – Brooker et al ARIS site
Answers to End-of-Chapter Questions – Brooker et al ARIS site

Effects of mutations
Effects of mutations

... - DNA wound around histones - located in the nucleus - diploid (in pairs) or haploid (single) - linear appearance •Prokaryotic chromosomes - DNA condensed into a packet by means of histone-like proteins - single, circular chromosome ...
Structure of Nucleic Acids
Structure of Nucleic Acids

... example, human cells range in diameter from 20 to 100 µm with an average diameter of about 65 µm. The nucleus in this cell has a diameter of perhaps 5 µm and a volume of about 65 µm3. The largest human chromosome contains 2.4 × 108 base pairs and if stretched out linearly it would have an overall le ...
Title goes here
Title goes here

... Advancing Science with DNA Sequence Protein-protein interaction ...
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... 3. Molecule A contains the [1] (1) starch necessary for ribosome synthesis in the cytoplasm (2) organic substance that is broken down into molecules B, C, and D (3) proteins that form the ribosome in the cytoplasm (4) directions for the synthesis of molecules B, C, and D 4. Molecules B, C, and D ar ...
Connect the dots…DNA to Disease, Oltmann
Connect the dots…DNA to Disease, Oltmann

... search against a database of known proteins to determine which protein their sequence encodes. The goal is to show students that genes encode proteins, which in turn can cause disease if mutated or function improperly. Background Unfortunately, most students fail to make the connection between DNA s ...
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Nucleosome



A nucleosome is a basic unit of DNA packaging in eukaryotes, consisting of a segment of DNA wound in sequence around eight histone protein cores. This structure is often compared to thread wrapped around a spool.Nucleosomes form the fundamental repeating units of eukaryotic chromatin, which is used to pack the large eukaryotic genomes into the nucleus while still ensuring appropriate access to it (in mammalian cells approximately 2 m of linear DNA have to be packed into a nucleus of roughly 10 µm diameter). Nucleosomes are folded through a series of successively higher order structures to eventually form a chromosome; this both compacts DNA and creates an added layer of regulatory control, which ensures correct gene expression. Nucleosomes are thought to carry epigenetically inherited information in the form of covalent modifications of their core histones.Nucleosomes were observed as particles in the electron microscope by Don and Ada Olins and their existence and structure (as histone octamers surrounded by approximately 200 base pairs of DNA) were proposed by Roger Kornberg. The role of the nucleosome as a general gene repressor was demonstrated by Lorch et al. in vitro and by Han and Grunstein in vivo.The nucleosome core particle consists of approximately 147 base pairs of DNA wrapped in 1.67 left-handed superhelical turns around a histone octamer consisting of 2 copies each of the core histones H2A, H2B, H3, and H4. Core particles are connected by stretches of ""linker DNA"", which can be up to about 80 bp long. Technically, a nucleosome is defined as the core particle plus one of these linker regions; however the word is often synonymous with the core particle. Genome-wide nucleosome positioning maps are now available for many model organisms including mouse liver and brain.Linker histones such as H1 and its isoforms are involved in chromatin compaction and sit at the base of the nucleosome near the DNA entry and exit binding to the linker region of the DNA. Non-condensed nucleosomes without the linker histone resemble ""beads on a string of DNA"" under an electron microscope.In contrast to most eukaryotic cells, mature sperm cells largely use protamines to package their genomic DNA, most likely to achieve an even higher packaging ratio. Histone equivalents and a simplified chromatin structure have also been found in Archea, suggesting that eukaryotes are not the only organisms that use nucleosomes.
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