BIO 303 Lecture Notes - Lecture 2: Wild Type, Reverse Transcriptase, Natural Selection
Document Summary
If purine and pyrimidine don"t match then it will cause problems for the dna. Certain transcription factors that interact with certain proteins. Either the narrow or wide groove at particular sites. Add a new nucleotide can only be added to 3" n to the growing strand. Chemical bonds = hydrogen bonds = weak bonds. Has to have a code, made for replication. A-t rich region - 11 base pairs long. First amino acid to protein synthesizing apparatus. Viruses gets into host cell who uses dna. Helper t cells - help generate human response. Main cells - immune response to viruses. If they are destroyed you will not be able to fight off common infections. 1. 5% of our dna is for polypeptides. Usually due to differences between two alleles. Polymorphism: multiple alleles of a single gene. Mutation occurs each time dna is replicated. Occurs in intergenic regions not coded areas. Unbroken range of phenotypes, no discrete classes.
