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The Genetics of Viruses and Prokaryotes The Genetics of Viruses
The Genetics of Viruses and Prokaryotes The Genetics of Viruses

... enveloped, by their genetic material, and by their host range. • Some viruses have a lipid membrane derived from host membranes, which determines if they are enveloped or naked. • They have a nucleic acid genome, that can be DS or SS, RNA or DNA. • The host range can be at the level of cells, tissue ...
bioblankspdfver - Issaquah Connect
bioblankspdfver - Issaquah Connect

... o Embryonic development: __________ of embryos at different stages of development, but not in the adult stage of the species o Shared or similar ________ code Endosymbiosis o One organism lies within the body of another and both benefit o The theory proposes certain organelles (such as _________ and ...
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... Van den Akker J, Huret JL. t(12;22)(p13;q11-12). Atlas Genet Cytogenet Oncol Haematol.1997;1(2):81-82. ...
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... Dolly, the most famous sheep in the world, was cloned in the Roslin Institute in Scotland in 1996. When this was announced in February 1997 it caused a sensation, because until then many scientists thought that such cloning was impossible. Such cloning is the production of one or more animals that a ...
Understanding Heritability and Epigenetics
Understanding Heritability and Epigenetics

... Epigenetics is more about understanding how the environment affects genes and, therefore, behaviors. It is the study of how variation in inherited traits can originate through means other than variations in DNA. Epigenetics refers to the epigenome. The prefix “epi” means above, while “genome” refers ...
CHEM 482
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Supplementary Information (doc 83K)
Supplementary Information (doc 83K)

... The region of the R. pomeroyi genome (Moran et al., 2004; see http://cmr.jcvi.org/cgibin/CMR/GenomePage.cgi?org=gsi) that spanned the promoter regions of both dddW and the divergently transcribed regulatory gene SPO0454 was amplified from genomic DNA using primers shown in Supplementary Table 2 and ...
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... Many alleles are harmless, but some can cause specific diseases. They can be dominant or recessive. To determine whether a disease is genetic, we trace the family history of a disease by creating a type of family tree called a pedigree. ...
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... could imagine that the fusion is only an apparent artifact of the work of a designer or the work of nature (due to common ancestry). The common ancestry scenario presents two predictions. Since the chromosomes were apparently joined end to end, and the ends of chromosomes (called the telomere ) have ...
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... 15.3 I can describe examples of traits determined by genes on sex chromosomes Illustrative examples a. sex-linked genes (X chromosome in humans) b. small Y chromosome with few genes (flies & humans) c. X-linked recessive traits always expressed in males d. Sex-limited traits such as milk production ...
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... understanding how humans have evolved, because it opens the door to large-scale comparative studies. The major impact of such studies will be to reveal just how similar humans are to each other and to other species (Pääbo 2001). The sequencing of the human genome heralds a new age in medicine, with ...
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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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