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- 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_I%3A_Genes_Nucleic_Acids_Genomes_and_Chromosomes/3%3A_Isolating_and_Analyzing_Genes/3.09%3A_Introns_and_ExonsFar more exons and introns have been discovered (or more accurately, predicted) throught the analysis of genomic DNA sequences than could ever be discovered by direct experimentation. The different ty...Far more exons and introns have been discovered (or more accurately, predicted) throught the analysis of genomic DNA sequences than could ever be discovered by direct experimentation. The different types of exons, the enormous length of introns, and other factors have complicated the task of finding reliable diagnostic signatures for exons in genomic sequences. However, considerable progress has been made and continues in current research.
- https://bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/Biology_(Kimball)/06%3A_Gene_Expression/6.06%3A_Expressed_Sequence_TagsThis page discusses vertebrate DNA, emphasizing that only a small percentage encodes proteins, while much consists of non-coding regions. Identifying genes is complex, even with complete genomic data....This page discusses vertebrate DNA, emphasizing that only a small percentage encodes proteins, while much consists of non-coding regions. Identifying genes is complex, even with complete genomic data. Transcriptome analysis, which examines mRNA from various cell types, aids in gene identification. Expressed Sequence Tags (ESTs) are used to determine gene activity by isolating mRNA, converting it to cDNA, and sequencing it for genomic matches.
