Biology 2581B Lecture Notes - Lecture 7: Irradiation, Cytosine, Mutagen
8 Mar 2016
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Reading: 7. 1 mutations: primary tools of genetic analysis. Mutation: a change in dna sequence and the change can be inherited. If you have a change that doesn"t get passed on, it will have no effect on the population. Something must have happened at a genomic level to cause changes in color pigmentations ph can have an effect on the color type of a flower. Environmental causes (rabbit example) --> when exposed to cold, the pigmentation turns black. Some organism can be different in color but they can be identical. We have a tracking system so we can track changes between strands. We have a difference in both growth patterns. Mutant: an organism which experiences a change in dna sequence. Most mutations do not have any effect - the organism. Everything you observe can depend on the conditions you use to observe. A mutation that leads to a phenotype change is easy to track.
