NATS 1675 Lecture Notes - Lecture 28: Sickle-Cell Disease, Bell Pepper, Homologous Chromosome
4 Aug 2015
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Document Summary
O random assortment of chromosomes during reduction division: crossing over. Intracellular environment changes that can happen (we think), during aging: the older we get, the more waste products are available in the cell at some point, this may cause changes to the dna. Environment mutagens are chemicals that are known to cause mutations. Changes: can occur as deletions from the dna code. Substitutions: changes in sequence od the base pairs often called frame shipped mutation. Pk2 change in the information for one enzyme. Dna breaks and repairs but cannot be replaced. Cannot be prevented entirely, but it can be reduced. As far as possible, have a lead barrier between the rays and your reproductive. Important to avoid exposure to x-rays and gamma rays organs. Include anti-oxidant rich foods in your diet: fruits (blueberries are very rich in anti oxidants), vegetables the darker the colour of the fruits or vegetables, the more anti oxidants it has, omega.
