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Seminal Proteins
Seminal Proteins

... Consequently, when such seminal fluid positively charged fractions were incubated with exogenous DNA, it was mistakenly demonstrated that a sort of band substitution was identified. This was occurred when only DNA binding stain (ethidium bromide) was used. But another conclusion was obtained when bo ...
School of Biomedical Biomolecular and Chemical Sciences
School of Biomedical Biomolecular and Chemical Sciences

... The objectives of this unit are to provide students with a broad knowledge and understanding of the concepts and methods used in molecular biology. Molecular biology can be defined as the study of biological phenomena in molecular terms, or more precisely as the study of gene structure and function ...
Applicability and sensitivity of PCR SSCP method for milk species
Applicability and sensitivity of PCR SSCP method for milk species

... samples from hypermarkets and retails. 64 cheeses were labelled as sheep milk cheeses, 16 cheeses were made of cow milk, 11 cheeses were made of goat milk, 13 cheeses were labelled as sheep and cow cheeses and 1 cheese was labelled as it was made of goat and cow milk. We detected the presence of und ...
Biotechnology Australia
Biotechnology Australia

... Most vaccines are: low doses of dead disease - causing microorganisms; inactivated toxins from disease - causing bacteria; or weakened living diseasecausing organisms that are unable to cause the severe form of the disease. A vaccine is recognised by the body as a foreign substance. The cells of the ...
Building Proteins - Marblehead High School
Building Proteins - Marblehead High School

... promoter region on the DNA Promoters – nucleotide sequence that signals the RNA polymerase to bind to them 2) RNA polymerase separates the DNA strands ...
How to measure DNA methylation
How to measure DNA methylation

1-2 Teacher
1-2 Teacher

... Separating DNA In gel electrophoresis, DNA fragments are placed at one end of a porous gel, and an electric voltage is applied to the gel. When the power is turned on, the negativelycharged DNA molecules move toward the positive end of the gel. ...
Restriction Enzyme Digest and Plasmid mapping
Restriction Enzyme Digest and Plasmid mapping

... functions of restriction enzymes and their use as molecular biology tools will be stressed. Using agarose gel electrophoresis, you will examine the digestion patterns and determine the sizes of unknown DNA fragments. Restriction enzymes were a catalyst for the molecular biology revolution, and now h ...
Chapter 13 Chromatin Structure and its Effects on
Chapter 13 Chromatin Structure and its Effects on

... Chapter 13 Chromatin Structure and its Effects on Transcription ...
lecture CH22 chem131pikul UPDATED
lecture CH22 chem131pikul UPDATED

... •There are two types of nucleic acids: DNA and RNA. •DNA (deoxyribonucleic acid) stores the genetic information of an organism and transmits that information from one generation to another. •RNA (ribonucleic acid) translates the genetic information contained in DNA into proteins needed for all cellu ...
Bacteria Transformation
Bacteria Transformation

... handle. “I don’t understand. What is diabetes and how can I get better?” The doctor felt bad for Irene. She said, “Irene, I can explain how this happened, and how we can fix it.” ...
Solution Key 7.013 Practice Exam 2
Solution Key 7.013 Practice Exam 2

... Telomerase aids in repairing the ends of chromosomes that progressively shorten after each replication cycle. This helps to preserve the genetic information that is crucial for the cell division, functioning and survival. e) In a separate experiment, you irradiate the mouse epidermal cells, growing ...
Transcription and genetic code
Transcription and genetic code

... • Genes provide the instructions for making specific proteins. • The bridge between DNA and protein synthesis is RNA. • RNA is chemically similar to DNA, except that it contains ribose as its sugar and substitutes the nitrogenous base uracil for thymine. – An RNA molecules almost always consists of ...
Lesson Plans Teacher: Robinson Dates: 2/6
Lesson Plans Teacher: Robinson Dates: 2/6

... I can recognize autosomal chromosomes, sexual chromosomes, trisomy chromosomes when reviewing a karyotype. I can explain simple inheritance patterns using pedigrees. Use Punnett's squares to produce BOTH the F1 and F2 generations from a breeding between PPGG x ppgg. (Note to students: F2 are produce ...
Restriction Digest of pAMP and pKAN
Restriction Digest of pAMP and pKAN

... There are several methods used to analyze DNA. The purpose of this laboratory is to introduce one method commonly used to analyze a DNA plasmid (circular, double-stranded DNA). The protocol uses a mixture of two restriction enzymes, BamHI and HindIII, to digest (cut) two plasmids and electrophoresis ...
Section D - Prokaryotic and Eukaryotic Chromosome Structure
Section D - Prokaryotic and Eukaryotic Chromosome Structure

... which are then packaged into the phage particles. • Ligated λ ends which do not contain an insert, or have one which is smaller or larger than the 20kb optimum, are too small or to large to be packaged, and recombinants with two left or right arms are likewise not viable. ...
7.014 Problem Set 5
7.014 Problem Set 5

... dominant : recessive, but that is not the result. Instead, you get a 1:2 ratio of yellow:light-yellow. This result can be explained by a co-dominance between the phenotype produced by the KY allele and the phenotype produced by the KX allele. In addition, the homozygous Kx genotype, must be lethal, ...
BSN/Briefing 24 - British Society for Neuroendocrinology
BSN/Briefing 24 - British Society for Neuroendocrinology

MCDB 1041 Activity 8: Genetic testing Part I. Using Restriction
MCDB 1041 Activity 8: Genetic testing Part I. Using Restriction

Meiosis: Step-by-step through sporulation
Meiosis: Step-by-step through sporulation

... middle and mid/late genes — SPS1, SMK1 and DIT1 — as well as the six CLB genes are expressed very poorly in the ndt80 mutant strain, whereas the early gene DMC1 is expressed normally. These results imply that wild-type Ndt80p is required, directly or indirectly, for expression of the later classes o ...
Chapter 3. The Beginnings of Genomic Biology
Chapter 3. The Beginnings of Genomic Biology

... can be larger positively charged proteins, and/or other larger molecular species. These ionic interactions play an important role producing the folding and packaging that is required to keep the large linear molecule packaged inside the microscopic cell. In the case of proteins it is clear that the ...
Overview - University of Missouri
Overview - University of Missouri

... data of offspring from two parents which differ in their appearance. Similar fingerprint data for two gene indicates they are physically close together on a chromosome. ...
chapter 15 chromosomal basis of inheritance
chapter 15 chromosomal basis of inheritance

... Wild type – most common phenotype in nature, ex. red eyes in fruit fly. Mutant phenotype – alternatives to the wild type, ex. white eyes in fruit fly. Linked genes – genes located on the same chromosome that tend to be inherited together. Genetic recombination – the production of offspring with new ...
Genes and mutations
Genes and mutations

... Performed recombination tests between all point mutations known to lie in the same small region of the chromosome Result – fine structure map of the rII gene locus ...
File
File

... 3. Enzymes that cut DNA molecules at specific places a. have sticky ends. b. are restriction enzymes. c. work only on bacterial DNA. d. always break the DNA between guanine and adenine. ANS: B ...
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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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