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in non sex cells
in non sex cells

... 1.The gene-chromosome theory states that genes are segments of DNA located on chromosomes and are found in homologous pairs. Which figure below would represent the theory? ...
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Inherited Diseases PowerPoint

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Genetic Fidelity Testing of Tissue Culture Raised Plants - NCS-TCP
Genetic Fidelity Testing of Tissue Culture Raised Plants - NCS-TCP

... bases and are widely distributed throughout the eukaryotic genomes, making them the preferred marker for very-high resolution genetic mapping. They are characterized by a high degree of length polymorphism and have proven to be an extremely valuable tool for genome mapping in many organisms. A major ...
Genetically Modified Organisms
Genetically Modified Organisms

... Conventional plant breeding includes techniques such as cross pollination, chromosome doubling, and mutation breeding. Selecting the best plants to serve as parent lines and DNA marker assisted selection (MAS) are also considered to be components of conventional breeding. Conventionally bred plants ...
The Story of Molecular Biology and Its Creators
The Story of Molecular Biology and Its Creators

... The law of dominance • For each physical trait, one member of any pair of hereditary determinants is dominant so that the physical trait that it specifies appears in a 3:1 ratio. • The alternative form is recessive. ...
Unit 7 (Molecular Biology - DNA) Study Guide KEY
Unit 7 (Molecular Biology - DNA) Study Guide KEY

... gene on the plasmid as well as placing the bacteria in an antibiotic.) a. The first step in this process uses restriction enzymes to create “Sticky Ends” on a plasmid and DNA from another source. This plasmid will also have a gene for antibiotic resistance on it. b. The second step is to introduce t ...
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Recombinant DNA Technology

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Polymerase Chain Reaction
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Copying DNA: Southern Blotting

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Biotechnology-Genetic Engineering (3)

Cellular ageing processes - Homepages | The University of Aberdeen
Cellular ageing processes - Homepages | The University of Aberdeen

... When this gel was blotted and probed with gene-specific DNA probes, it was shown that the circular DNA was ribosomal DNA. These circles are called ERC (extra-chromosomal rDNA circles), and they must have formed by recombination within the tandemly-repeated rDNA genes on the chromosome. The conclusio ...
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The Plant World and Genetic Engineering

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Chapter 14 Genetic Engineering PP Notes

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Chapter 12 Study Guide 12.1 Identifying the Substance of Genes

... heat-killed bacteria of one strain could change the inherited characteristics of another strain. He called the process transformation because one type of bacteria (a harmless form) had been changed permanently into another (a disease-carrying form). Because the ability to cause disease was inherited ...
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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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