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SNPs - PBGworks
SNPs - PBGworks

... Expressed Sequence Tags (ESTs): Sampling the Transcriptome and Genic Regions  What is an EST?  single pass sequence from cDNA  specific tissue, stage, environment, etc. ...
Two powerful transgenic techniques Addition of genes by nuclear
Two powerful transgenic techniques Addition of genes by nuclear

... Knocking out a gene in ES cells ...
doc
doc

... species tree. Match them to the deviations below: i. In-paralogs resulting from a recent gene duplication ii. Horizontal gene transfer ii. Long branch attraction iv. Difficult to tell, but could be a result of lack of resolution A. Beta2frongs grouping with Betafungi B. Alphaalgae grouping with Alph ...
HaeIII restriction endonuclease was used to digest the following
HaeIII restriction endonuclease was used to digest the following

Directions: Use the DNA tutorials from my wiki to answer the
Directions: Use the DNA tutorials from my wiki to answer the

... • What are the four pairs of DNA bases that form in the double helix? • Which carbon in the sugar attaches to one of the four bases? • How can A distinguish T from C? • Which DNA double helix do you think would be harder to separate into two strands: DNA composed predominantly of AT base pairs, or o ...
DNA Replication: Seeing Double
DNA Replication: Seeing Double

... the Leading and Lagging strands two complete strands of DNA separate from one another. ...
summing-up - Zanichelli online per la scuola
summing-up - Zanichelli online per la scuola

... the gene, called exons, which code for each part of the polypeptide chain. The genes that exhibit both introns and exons are called interrupted genes (or split genes). About half of human genes are interrupted genes. The production of mRNA from an ...
Mutation, Repair, and Recombination
Mutation, Repair, and Recombination

... Frameshift mutations arise from addition or deletion of one or more bases in other than multiples of three. When translated, this will alter the reading frame and therefore the amino acid sequence from the site of the mutation to the end of the protein product. Also, frameshift mutations often resul ...
Protein Synthesis Self Check
Protein Synthesis Self Check

... 26) Based on what you said above, if you had a protein made up of 100 amino acids, how many nucleotide bases were there in the mRNA that coded for that protein? How many codons does that represent? 27) The first product of transcription contains unusable “junk” sequences, what do we call these regio ...
MGY428- Genomes
MGY428- Genomes

... Centromeres mediate interactions between sister chromatids and the kinetochore during replication In budding yeast centromeres are 125 bp in length and contain specific sites for binding kinetochore proteins. In human the centromere is composed of hundreds of thousands of copies of a 171 bp repeat t ...
Bio 220 MiniQuiz 1
Bio 220 MiniQuiz 1

... Bio 220 MiniQuiz 3 ...
8(problem set I)
8(problem set I)

... that can form when phospholipids are mixed with water. Discuss the factors that determine which of these structures is most likely to form 10. By considering the electrostatic self-energy, estimate the energy required to transfer a positive ion of radius 0.3 nm from water to the centre of a lipid bi ...
Object 4: Genetic fingerprinting
Object 4: Genetic fingerprinting

... Genetic fingerprinting is a technique used to identify an individual from their unique DNA pattern. History Genetic fingerprinting was discovered by geneticist Sir Alec Jeffreys in Leicester in 1984. Although over 99% of human DNA is the same, he discovered short sequences of DNA called minisatellit ...
PowerPoint 簡報
PowerPoint 簡報

... With conventional breeding, traits can only be transferred between plants or animals of the same or closely related species. ...
Slide 1
Slide 1

... followed by synthesis of a new DNA strand • Damage recognized by endonuclease  cut phosphodiester backbone on both sides of damage • Excision of DNA with damaged backbone carried out by exonuclease ...
Protein Synth Mutation test review
Protein Synth Mutation test review

... 18. Changes in DNA can affect the ____________ made during transcription. These changes can ultimately affect the type of _____________ made by the ribosomes. Changes in the proteins can cause changes in the ____________ a person has. 19. Are most mutations helpful, benign, or harmful? ...
5` 3` 3` 5` w c A T coding or sense st template strand mRNA GA C GC
5` 3` 3` 5` w c A T coding or sense st template strand mRNA GA C GC

... » (Meiosis) ...
PPT - Michael J. Watts
PPT - Michael J. Watts

... Sequence Alignment ...
Bioinformatics - University of Maine System
Bioinformatics - University of Maine System

... Where do we find consensus sequence elements (CSEs)? How many elements are there at that genomic region? ...
Genetics of Viruses & Bacteria
Genetics of Viruses & Bacteria

... chromosomes  Beneficial for recombination; not necessary for survival  R plasmid allows bacteria to be antibiotic resistant ...
Genetics 310 Practice exam III-1
Genetics 310 Practice exam III-1

... 1. What are the two types of molecules found in eukaryotic chromosomes? 2. True or False? ____ Man has more DNA per genome than all other organisms. ____ The number of chromosomes is a direct reflection of the amount of DNA/genome in a species. ____ All of the DNA in a eukaryote is unique sequence D ...
cDNA cloning, expression and chromosomal localization of the
cDNA cloning, expression and chromosomal localization of the

... be necessary for protein-protein interaction (Eklund et al. 1991). Fourth, the Trx12 sequence is flanked by a 15 bp direct repeat (with only one mismatch) that is believed to play a role in the insertion of the sequence into the genome (Vanin 1985). Fifth, the promoter regions described for human T ...
Lecture 5 The chemical nature of the Gene
Lecture 5 The chemical nature of the Gene

... Arguments in favour of genes being made of DNA •  All cells of a given species contain a constant amount of DNA but the types and amounts of proteins differ in different cells •  The amount of DNA doubles in every cell just before it divides and an exactly equal amount is distributed to the two dau ...
Name - O. Henry Science
Name - O. Henry Science

presentation source
presentation source

... covalent bond between the 3’ end of the new Okazaki fragment and the 5’ end of the growing chain ...
< 1 ... 715 716 717 718 719 720 721 722 723 ... 873 >

Helitron (biology)

A helitron is a transposon found in eukaryotes that is thought to replicate by a so-called ""rolling-circle"" mechanism. This category of transposons was discovered by Vladimir Kapitonov and Jerzy Jurka in 2001. The rolling-circle process begins with a break being made at the terminus of a single strand of the helitron DNA. Transposase then sits at this break and at another break where the helitron targets as a migration site. The strand is then displaced from its original location at the site of the break and attached to the target break, forming a circlular heteroduplex. This heteroduplex is then resolved into a flat piece of DNA via replication. During the rolling-circle process, DNA can be replicated beyond the initial helitron sequence, resulting in the flanking regions of DNA being ""captured"" by the helitron as it moves to a new location.
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