CAS BI 203 Lecture Notes - Lecture 5: Sickle-Cell Disease, Exonuclease, Valine
7 Feb 2014
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1903 [00:00:01. 48] speaker 1: in these next few videos, we"ll talk about dna repair-- what. 1904 happens when dna is damaged from external environmental conditions or when a mistake is. Mistakes or damage is often referred to as mutations. 1907 [00:00:25. 58] we"ll take a look at the amount of dna damage that occurs each day. And then, in the second video, we"ll talk about three different ways of. 1909 repairing three different types of dna lesions. 1910 [00:00:43. 70] but first, we"ll go with some background. So here, you have a piece of double. The original dna had a g. and there should have. 1913 [00:01:02. 23] now, when it comes time for dna synthesis, and these two strands separate, and. 1914 both are used as templates for the next generation of cells, this a, if properly replicated, will be a. 1915 template for t. this g will be a template for the proper insertion of a c nucleotide, which is.
