BIOL 101 Lecture Notes - Lecture 14: The Double Helix, Maurice Wilkins, Dna Replication
Document Summary
Molecular biology: the investigation of life at the level of its individual molecules. Biological research was very minimal in knowledge until the 1950s. Once that time period hit, the research on it seems to have grown more important. James watson and francis crick presented the structure of dna: rosalind franklin, along with her colleague maurice wilkins, had an important part with the structure, by using a x-ray diffraction to reveal the structure of dna. The dna molecule is composed of three types of component molecules: phosphate groups, the sugar deoxyribose, and the bases adenine, thymine, guanine, and cytosine: nucleotides. These three molecules link to form the basic building block of dna, the nucleotide. Each nucleotide is composed of one sugar, one phosphate group, and one of the for bases. Across the strands of the helix, the matching pair is there (a with t, and c with g: the double helix.
