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Lecture 9

DENT LECTURE 9 The Eukaryotic Genome.pdf

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McGill University
Biology (Sci)
BIOL 112
Lucy- Ann Joseph

DENT LECTURE 9 The Eukaryotic GenomeTetraploids are big It not because they have more cells but mostly because their cells are bigger Cell size may be used to estimate genome sizeDinosaurs compared to birds and reptilesReptiles have lots of DNA where as birds have relatively little DNASize of dinosaur cells are smallerthan that of reptilestRex have relativelylittle DNA making them more closely related to birdsthan to reptilesGenomes have different sizes not just because they have diff number of chromosomes but the absolute size of genomes changeCells are bigger when they have more DNAIn eukaryotic DNA there seemed to be a lot more DNA than was needed for the genes that needed to be encodedIn prokaryotic DNA genes are packed in like sardines with basically just enough room between them
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