Biology 1001A Final: Cycle 5 Lecture Notes
4 Apr 2017
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You inherit 80 new mutations from your parents, plus all the mutations that your parents had. You could have a snp in your genome that your parents don"t. Alleles are different versions/dna sequences of a gene (aka an snp) One allele can be different from another at only one base pair, that"s enough difference. Origin is inherent in chemistry of dna, enzymology of replication/repair/recombination/cytoskeleton. Can be influenced by physical, chemical, biological agents/conditions a. Frequency of variation increases/decreases based on these things. Origin is undirected with respect to survival value a. b. Reproduce in response to environment change i. ii. iii. In an effort to produce offspring that are genetically different that will be able to survive the new environment. Origin is not randomly distributed around genome a. Mutations are not random, but not directed either. Only germ-like variation is available to selection a. Long ago, people used to believe hat inheritance was by blending.
