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The Sexual Nature of the Eukaryote Genome
The Sexual Nature of the Eukaryote Genome

... This paper supports a previous conjecture that the sexual cycle of eukaryotes arose from the infection of cells by genome parasites. The finding are as follows. (1) In prokaryotes, conjugative plasmids ensure their own spread by directing partial cell fusion. (2) Conjugative plasmids permit gene tra ...
MicroReview Paradigms of plasmid organization
MicroReview Paradigms of plasmid organization

... were to be inherited stably over many generations (Gerdes et al., 2000). Identical copies of a plasmid or chromosome in a bacterial cell will tend to recombine, especially when prompted by DNA damage and, for circular molecules, this is a problem because it can cause dimerization, which prevents sep ...
Transgenic Animals - Lungeninformationsdienst
Transgenic Animals - Lungeninformationsdienst

...  Inefficient: about 5 % of inoculated eggs develop into transgenic animals  66 % of eggs survive the injection procedure  25 % of the implanted eggs develop into pups  25 % of the pups are transgenic  from 1000 inoculated fertilized eggs, 30 – 50 transgenic pups are produced  Not all transgeni ...
Policy for sample drop-off and storage in the DNA Analysis Facility
Policy for sample drop-off and storage in the DNA Analysis Facility

... name, the Investigator’s name and the date. These should be placed on the top shelf of the “Fragment Analysis” refrigerator located in 305 HSRF. They will be returned to the top shelf. Once data has been received, it is the responsibility of the user to retrieve or discard their samples. Samples tha ...
Near Neutrality, Rate Heterogeneity, and Linkage Govern
Near Neutrality, Rate Heterogeneity, and Linkage Govern

... 1999), bouts of adaptive evolution (McVean 2001), or mutational hot spots (Galtier et al. 2006). Nonetheless, the necessary enzymes for recombination are present in the mitochondria, and a few paternal mitochondria do penetrate the egg during fertilization (Thygarajan et al. 1996). Recombination is ...
Exam 2
Exam 2

... Convergent evolution is A. also known as adaptive radiation. B. responsible for the development of analogous structures. C. the splitting of an ancestral group into two different species. D. the independent development of similar features in related species. Question 20 Regulatory and structural gen ...
Application of Recombinant DNA Technology to Studies on Plant
Application of Recombinant DNA Technology to Studies on Plant

... and increase the yield of secondary metabolites, both in cultures and in transformed plants. The different plant transformation strategies reviewed here are: infection with intact Agrobacteria; particle bombardment, vacuum infiltration and floral dip; viral vectors and finally protoplast fusion. The ...
Meiosis ppt
Meiosis ppt

... sperm cells. They lose most of their cytoplasm, remodel their cell shape, and grow a long flagellum (tail). ...
Identification of Bacterial Species Using Colony PCR
Identification of Bacterial Species Using Colony PCR

... incorporated into the gel itself or applied post-gel electrophoresis. Stains can be viewed using a UV light. Ethidium bromide was the most commonly used until it was found to be extremely toxic because it can easily soak through the skin and bind to the DNA. The ethidium bromide is an intercalating ...
Educational Items Section Telomeres Atlas of Genetics and Cytogenetics in Oncology and Haematology
Educational Items Section Telomeres Atlas of Genetics and Cytogenetics in Oncology and Haematology

... formation of cancers. VI.1.2. Expression of hTERT alone causes immortalization alone; cell transformation requires immortalization accompanied by inactivation of tumor suppressor genes and activation of cellular oncogenes. VI.1.3. Telomere shortening can serve to inhibit early stages of tumor growth ...
Exam 2 (pdf - 449.81kb)
Exam 2 (pdf - 449.81kb)

... e. Explain why a farmer might choose to grow a crop that was genetically engineered to be resistant to insects, rather than spray the crop with insecticide. ...
Synthetic Zinc Finger Transcription Factor Action at
Synthetic Zinc Finger Transcription Factor Action at

... transcription factors may also provide novel means of regulating endogenous chromosomal loci for a variety of beneficial purposes. Over the past decade, the primary structural determinants of DNA recognition by zinc fingers of the Cys2-His2 type have been elucidated (1– 8). Designer transcriptional ...
Chapter 12 Reproduction and Meiosis
Chapter 12 Reproduction and Meiosis

... It was discovered in 1974 that the agrobacteria-related swelling in plants is caused by the circular DNA of bacteria. Subsequent studies showed that part of this circular DNA is incorporated into the plant genomic DNA and is replicated along with DNA replication. It was also found that the inserted ...
CELL CYCLE AND CELL DIVISION ACTIVITY When you fall and
CELL CYCLE AND CELL DIVISION ACTIVITY When you fall and

Identification of Vietnamese Coptotermes pest species based on the
Identification of Vietnamese Coptotermes pest species based on the

... primers LR-J-13007, LR-N-13398 (Simon et al., 1994) is an widely applied method for the identification of species of lower and higher termites, in particular, it is useful for the identification of species belonging to Coptotermes and Reticulitermes (Austin et al., 2004b; 2012; Szalanski et al., 200 ...
FANCE Antibody
FANCE Antibody

... (also called BRCA2), FANCD2, FANCE, FANCF, FANCG, FANCI, FANCJ (also called BRIP1), FANCL, FANCM and FANCN (also called PALB2). The previously defined group FANCH is the same as FANCA. Fanconi anemia is a genetically heterogeneous recessive disorder characterized by cytogenetic instability, hypersen ...
Prok and Euk Gene Expression
Prok and Euk Gene Expression

... i. Get that message processed and taken to cytoplasm for translation. e. If the ribosomes stall on the trp codons i. The RNA formed is not a terminator. ii. Transcription of the operon proceeds f. If the ribosomes translate the leader i. Pass trp codons quickly ii. Intrinsic terminator is formed iii ...


Insertion of liver enriched transcription
Insertion of liver enriched transcription

... could be utilized in medicine for gene therapy. At present the usual method for selection of a tissue-specific promoter is to identify a gene, which is expressed at unusually high level in the target tissue, and then to use the promoter for this gene to drive expression of another therapeutic gene i ...
58 - Lab Times
58 - Lab Times

... Some microorganisms such as the Agrobacterium strain CP4 have a version of EPSPS that is resistant to glyphosate inhibition. On the basis of the isolated and cloned genes coding such glyphosate resistant EPSPS, Monsanto developed and patented genetically engineered crops which are glyphosate toleran ...
A Sex Chromosome Rearrangement in a Human XX
A Sex Chromosome Rearrangement in a Human XX

... et al., 1985), which consists essentially of highly homologous sequences locatedtt on both the Y chromosome short arm (Vergnaud et al., 1986) and the X chromosome long arm (Geldwerth et al., 1985). Probe 47z, which originates from the other end of the cosmid 47 insert, does not detect any Y-spettttt ...
Recognition of an organism from fragments of its complete genome
Recognition of an organism from fragments of its complete genome

... Yu et al. 关31兴 introduced a representation of a DNA sequence by a probability measure of k strings derived from the sequence. This probability measure is, in fact, the histogram of the events formed by all the k strings in a dictionary ordering. It was found 关31兴 that these probability measures disp ...
Slide 1
Slide 1

... other; i is recessive to both other alleles.  An individual will have two of these alleles. ...
Evolutionary implications of non- neutral
Evolutionary implications of non- neutral

... whereby mitochondrial haplotypes are introgressed into controlled or randomized nuclear backgrounds over successive generations [14,16,17]. However, it must be noted that even the most rigorous backcrossing programs might fail to break up some of the most tightly co-evolved mito-nuclear gene complex ...
A Survey of Intron Research in Genetics
A Survey of Intron Research in Genetics

... The existence of the intron-exon structure has been particularly intriguing. Introns are only found in eukaryotic genomes and make up a large portion of the DNA in eukaryotic genomes. In humans, for example, approximately 30% of the human genome is made up of introns [1]. Only about 3% consists of c ...
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Extrachromosomal DNA



Extrachromosomal DNA is any DNA that is found outside of the nucleus of a cell. It is also referred to as extranuclear DNA or cytoplasmic DNA. Most DNA in an individual genome is found in chromosomes but DNA found outside of the nucleus also serves important biological functions.In prokaryotes, nonviral extrachromosomal DNA is primarily found in plasmids whereas in eukaryotes extrachromosomal DNA is primarily found in organelles. Mitochondrial DNA is a main source of this extrachromosomal DNA in eukaryotes. Extrachromosomal DNA is often used in research of replication because it is easy to identify and isolate.Extrachromosomal DNA was found to be structurally different from nuclear DNA. Cytoplasmic DNA is less methylated than DNA found within the nucleus. It was also confirmed that the sequences of cytoplasmic DNA was different from nuclear DNA in the same organism, showing that cytoplasmic DNAs are not simply fragments of nuclear DNA.In addition to DNA found outside of the nucleus in cells, infection of viral genomes also provides an example of extrachromosomal DNA.
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