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Recombinant DNA and Genetic Engineering
Recombinant DNA and Genetic Engineering

... Golden Rice or Frankenfood? • Scientists transferred daffodil genes into rice • Rice with beta-carotene may help prevent vitamin A deficiencies • Opponents fear unforeseen consequences of creating genetically modified organisms ...
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LAB EXERCISE: Genetic Transformation

... and glow in the dark. Following the transformation procedure, the bacteria express their newly acquired jellyfish gene and produce the fluorescent protein, which causes them to glow a brilliant green color under ultraviolet light. In addition to one large chromosome, bacteria naturally contain one o ...
Lesson 2 Transformation Laboratory
Lesson 2 Transformation Laboratory

... and glow in the dark. Following the transformation procedure, the bacteria express their newly acquired jellyfish gene and produce the fluorescent protein, which causes them to glow a brilliant green color under ultraviolet light. In addition to one large chromosome, bacteria naturally contain one o ...
Name_______________________ Period___________ Chapter
Name_______________________ Period___________ Chapter

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Chapter 20: Biotechnology - Staff Web Sites @ BBHCSD
Chapter 20: Biotechnology - Staff Web Sites @ BBHCSD

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10529_2013_1416_MOESM1_ESM
10529_2013_1416_MOESM1_ESM

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The Effects of varying pH on Plasmid Transfer

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Ch6 XC Test - cloudfront.net
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Lambda Vectors and their replication

... • Double stranded DNA molecule • 5' twelve-base-pair sticky ends (cos sites) • It is used as a cloning vector, accommodating fragments of DNA up to 15 kilobase pairs long. For larger pieces, the cosmid or YAC’s are used. • Will accept foreign DNA and still complete their life cycle. • Distinguish ce ...
Scientific Writing
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... adenovirus, to proliferate. They are capable of infecting both dividing & non dividing cells, & in the absence of a helper virus integrate into a specific point of the host genome (19q 13-qter) at a high frequency. When used as a vector, the rep & cap genes are replaced by the transgene & its associ ...
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... genome, lambda can only incorporate into a specific site, called attλ. The gal gene is on one side of attλ and the bio gene (biotin synthesis) is on the other side. • Sometimes when lambda come out of the chromosome at the end of the lysogenic phase, it crosses over at the wrong point. This is very ...
Cloning of genes from genomic DNA Parts 4 and 5: Ligation and
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... the cut PCR product and the cut vector together, thereby cloning our gene. The “sticky” ends (5’ overhangs) created from the restriction enzyme digestions will allow the XbaI end of the plasmid to basepair with the XbaI end of the PCR product. The HinDIII ends will also basepair to each other. Then ...
news and views feature
news and views feature

... transfers are ordinarily discovered during the construction of a phylogenetic tree of an individual protein. When two sequences from otherwise distantly related organisms are found to be more similar to each other than pairs of sequences from known closer relatives, horizontal gene transfer is suspe ...
Slide 1
Slide 1

... plasmid) which contain genetic information necessary for their own replication 2. Single circular double stranded DNA molecule ...
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Plasmid



A plasmid is a small DNA molecule within a cell that is physically separated from a chromosomal DNA and can replicate independently. They are most commonly found in bacteria as small, circular, double-stranded DNA molecules; however, plasmids are sometimes present in archaea and eukaryotic organisms. In nature, plasmids often carry genes that may benefit the survival of the organism, for example antibiotic resistance. While the chromosomes are big and contain all the essential information for living, plasmids usually are very small and contain only additional information. Artificial plasmids are widely used as vectors in molecular cloning, serving to drive the replication of recombinant DNA sequences within host organisms.Plasmids are considered replicons, a unit of DNA capable of replicating autonomously within a suitable host. However, plasmids, like viruses, are not generally classified as life. Plasmids can be transmitted from one bacterium to another (even of another species) via three main mechanisms: transformation, transduction, and conjugation. This host-to-host transfer of genetic material is called horizontal gene transfer, and plasmids can be considered part of the mobilome. Unlike viruses (which encase their genetic material in a protective protein coat called a capsid), plasmids are ""naked"" DNA and do not encode genes necessary to encase the genetic material for transfer to a new host. However, some classes of plasmids encode the conjugative ""sex"" pilus necessary for their own transfer. The size of the plasmid varies from 1 to over 200 kbp, and the number of identical plasmids in a single cell can range anywhere from one to thousands under some circumstances.The relationship between microbes and plasmid DNA is neither parasitic nor mutualistic, because each implies the presence of an independent species living in a detrimental or commensal state with the host organism. Rather, plasmids provide a mechanism for horizontal gene transfer within a population of microbes and typically provide a selective advantage under a given environmental state. Plasmids may carry genes that provide resistance to naturally occurring antibiotics in a competitive environmental niche, or the proteins produced may act as toxins under similar circumstances, or allow the organism to utilize particular organic compounds that would be advantageous when nutrients are scarce.
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