BIO120H1 Lecture Notes - Lecture 14: Dna Microarray, Northern Blot, Hybridization Probe
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BIO120H1 Full Course Notes
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See dna wrapping around the core histone octamer going to bend back. The interaction b/w dna & histone proteins & indeed, non-histone proteins (not going to talk about those) the building blocks of chromosomes. If you were take all 23 pairs (all 46 chromosomes) in each of your cells, stretch them out so that they"re a linear piece of dna & put those end to end together, they would be 2 nm long. Consider that you are a walking disco because you think about a disco at a night club, the lights are flashing on and off, in your cell genes are being turned on and off all the time. Now we"re going to talk about what genes are transcribed. What is it that makes the differences between each of us, unless we have an identical twin beside us, we look different and indeed if you look at your hand, the cells within that hand must be different.
