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Genetic_diseases_case_study
Genetic_diseases_case_study

Document
Document

... functional product (i.e. protein) • Proteins • required for structure, function, and regulation of cells, tissues, and organs • each protein has unique functions ...
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Bio 160 study guide 2009

... 15) ___________ code for the structure of proteins. 16) If a cell’s lysosomes burst the cell would _______________. 17) What characteristic of mitochondria suggests that they might have evolved from free living bacteria? ...
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File - HCDE Secondary Science

... The parts of a chromosome are held together by a ______________________. Only animal cells have __________________ to help with chromosome movement. During ___________________ sister chromatids are separated at the _________________ and are pulled to opposite ends of the cell. 5. DNA is ____________ ...
synopsis of recombinant dna guidelines and
synopsis of recombinant dna guidelines and

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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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