BIOL 206 Lecture 7: Lecture 7 (Biology Basics 2 DNA and RNA)
6 Mar 2016
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Lecture 7 (biology basics 2 dna and rna) To link between chromosomes and dna and genes. To describe watson and crick"s three dimensional model of dna. To understand the structural and functional differences between dna and rna. Compare and contrast the structure of dna and rna. Human body cells contain 46 chromosomes in 23 pairs, each pair is inherited from each parent. Encode for protein and rna molecules, which is necessary for life in cell or organism. Sugar and phosphates form the outside, backbone, of helix. Base forms internal rungs, like a twisting step ladder. Genetic information stored in sequence of bases in dna. Complementary sequence of bases in two strands of dna. Dna is folded and compacted by a factor ~ 10,000. Dna and rna are long linear polymers, called nucleic acids, that carry information in a form that can be passed from one generation to the next. Contains instructions for making proteins within the cell.
