BI111 Lecture : Biology Bi111
Document Summary
Weekly quiz on aplia due every sunday at 11:45pm. Encode in polynucleotide chains in a language with 4 letters. Made of up 4 different bases which makes up the language of dna (what the cell needs - instructions) Each base will only pair with one specific other base (complimentary base pairs) Double helix splits it undergoes semi conservative replication. Forms the template for a new strand. Higher in rna viruses (10-3 to 10-5 mutations base-1 generation. 1) than in dna viruses (10-6 to 10-8) Higher mitochondrial dna (3 x 10-6 yo 2. 7 x 10-5) than in genomic dna (2. 5 x 10-8) Higher in asexual species than sexual species. In humans approx 1. 1 x 10-8 mutations, per site per generation: rna is more unstable. Alternate mrna transcripts created by selective slicing/arrangement of exons. (figure 13. 5) the genetic code has both specificity and redundancy. Genetic code was established very early in the evolution of life and has remained unchanged.
