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- https://bio.libretexts.org/Bookshelves/Biochemistry/Fundamentals_of_Biochemistry_(Jakubowski_and_Flatt)/03%3A_Unit_III-_Information_Pathway/23%3A_Chromosome_Structure/23.02%3A_DNA_Transposable_ElementsThis page provides an overview of DNA transposable elements (TEs), discussing their definition, classification, structural features, mechanisms of transposition, regulation, and impact on genome struc...This page provides an overview of DNA transposable elements (TEs), discussing their definition, classification, structural features, mechanisms of transposition, regulation, and impact on genome structure and evolution. TEs are capable of moving within the genome and are widespread across various species. Their discovery traces back to Barbara McClintock's work on maize.
- https://bio.libretexts.org/Bookshelves/Genetics/Working_with_Molecular_Genetics_(Hardison)/Unit_II%3A_Replication_Maintenance_and_Alteration_of_the_Genetic_Material/9._Transposition_of_DNA/9.1%3A_Transposable_Elements_(Transposons)Transposable elements (both active and inactive) occupy approximately half the human genome and a substantially greater fraction of some plant genomes! These movable elements are ubiquitous in the bio...Transposable elements (both active and inactive) occupy approximately half the human genome and a substantially greater fraction of some plant genomes! These movable elements are ubiquitous in the biosphere, and are highly successful in propagating themselves. We now realize that some transposable elements are also viruses, for instance, some retroviruses can integrate into a host genome to form endogenous retroviruses.
- https://bio.libretexts.org/Bookshelves/Genetics/Working_with_Molecular_Genetics_(Hardison)/Unit_II%3A_Replication_Maintenance_and_Alteration_of_the_Genetic_Material/9._Transposition_of_DNA/9.2%3A_Are_Transposons_Parasites_or_SymbiontsDo the transposable elements confer some selective advantage on the "host"? Or are they merely parasitic or "selfish," existing only to increase the number of copies of the element? This critical iss...Do the transposable elements confer some selective advantage on the "host"? Or are they merely parasitic or "selfish," existing only to increase the number of copies of the element? This critical issue is a continuing controversy.
- https://bio.libretexts.org/Courses/City_College_of_San_Francisco/Introduction_to_Genetics/09%3A_Mutation_and_Variation/9.02%3A_Origins_of_MutationsThis page discusses mutations, which are changes in DNA due to deletions, insertions, or substitutions, and can occur spontaneously or through mutagens. It highlights biological mutations from replica...This page discusses mutations, which are changes in DNA due to deletions, insertions, or substitutions, and can occur spontaneously or through mutagens. It highlights biological mutations from replication errors and mobile genetic elements called transposable elements (TEs), which disrupt gene functions and are classified as Class I (retrotransposons) and Class II (transposons). TEs are important for genome evolution, affecting gene structure, function, and genetic diversity.
