Biology 2581B Lecture Notes - Lecture 17: Cytochrome C Oxidase Subunit I, Intron, Selfish Dna
13 Oct 2017
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Differences in genome architecture: size of genome, structure (circular, linear, fragmented), amount (haploid, diploid, content, rich in at"s (mitochondrial chromosomes) or cg"s (nuclear chromosomes) Are genes non-interrupted or arranged in order (or scrambled: noncoding dna: regulatory elements, repeats, mobile elements. What kinds are there: modifications: chromosome and behind the scenes, methylation, transcription all transcribed or not a lot, splicing what"s happening to the rna after, non-standard codes being translated, methylation. Eukaryotic diversity: there is huge diversity in genome architecture: within cells, within lineages, between different lineages. Thinking about genome evolution: molecular level: more intuitive, population level: less intuitive. Mutations alter genomes; the only way to alter genomes (fragment, etc. ) is all due to mutations. Or whole cell: frequency: rare (plant mitochondrial dna?) or often (animal mitochondrial dna, different types of organisms and mutations occur at different frequencies. Creation of cg rich base would result in like cg rich genome due to bias. E. g. or lots of insertions = bloated genome.
