BIOL 202 Lecture Notes - Restriction Enzyme, Variable Number Tandem Repeat, Capillary Action
21 May 2012
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Document Summary
Dna is not all created equally, however all chromosomes consist of some basic components: The centromere (primary constriction) is at the center of the dna, and binds to kinetochore proteins involved in cell division. Extending out of the centromere are 4 legs, coming from 2 sister chromatids. A series of repeated sequences at the end of the chromosome are known as telomeres, and help protect genomic integrity. As we can see from this table, the genome size can vary a lot depending on the organism, and it does not seem to follow complexity: e. g. The mouse has the same size genome as us, and the salamander beats us by approximately and order of magnitude, so the complexity does not correlate to the size of the genome. The c-value of an organism refers to its dna content; the c-value paradox refers to the lack of correlation between the c-value and the complexity of the organism.
