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AG2010 lecture 1_basic genetics
AG2010 lecture 1_basic genetics

... • Grant/grant/grant…start early. • Homework due dates will be noticed on website. • Question sessions before and after homework due every Thursday after class: covered contents are by request. ...
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... C. Inversion involves reversing a fragment of the original chromosome D. Translocation occurs when a fragment of one chromosome attaches to a non-homologous chromosome IV. Jumping Genes A. Single genes may move from one location to another in a chromosome or to a different chromosome B. This was dis ...
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Copy-number variation



Copy-number variations (CNVs)—a form of structural variation—are alterations of the DNA of a genome that results in the cell having an abnormal or, for certain genes, a normal variation in the number of copies of one or more sections of the DNA. CNVs correspond to relatively large regions of the genome that have been deleted (fewer than the normal number) or duplicated (more than the normal number) on certain chromosomes. For example, the chromosome that normally has sections in order as A-B-C-D might instead have sections A-B-C-C-D (a duplication of ""C"") or A-B-D (a deletion of ""C"").This variation accounts for roughly 13% of human genomic DNA and each variation may range from about one kilobase (1,000 nucleotide bases) to several megabases in size. CNVs contrast with single-nucleotide polymorphisms (SNPs), which affect only one single nucleotide base.
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