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Types of DNA in Genomes, Coding Regions, Repetitious Elements, Mobile DNA Elements, RNA Transposable Elements, DNA Transposons, Mechanism of Transposon Action, Eukaryotic Genomes. Enjoy about Techniques in Molecular Biology from this lecture handout.
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Figure 1 : The relative amount of retrotransposons and DNA transposons in diverse eukaryotic genomes. Species abbreviations: Sc: Saccharomyces cerevisiae; Sp: Schizosaccharomyces pombe; Hs: Homo sapiens; Mm: Mus musculus; Os: Oryza sativa; Ce: Caenorhabditis elegans; Dm: Drosophila melanogaster; Ag: Anopheles gambiae, malaria mosquito; Aa: Aedes aegypti, yellow fever mosquito; Eh: Entamoeba histolytica; Ei: Entamoeba invadens; Tv: Trichomonas vaginalis. From Nature Scitable 1(1): 2008
LTR (^) gag RT env LTR
RT: reverse transcriptase^ ~7 kb LTR: long terminal repeat gag, env: encode proteins needed for retroviral assembly and infection
Retroelements: missing some or most of the complete retroviral genome;
~6 kb
gag? RT^ poly(A)
~0.3 kb
poly(A)
