BIO 111 Lecture Notes - Lecture 11: Hydrogen Bond, Telomerase, Cell Division
Document Summary
Chapter 11: nucleic acid structure, dna replication, and chromosome structure. Genetic material: information- needed to make organism, replication- copied, transmission- mom to dad, cell to cell, variation- differences in genetic material. Getting rid of rna and proteins still led to transformation. They link together to form a strand of dna (rna) They form a double helix by h bonds. Genome = complete genetic material in an organism. Dna because of h (rna has oh there) Strands split up, each one shows up in each of the copied dna strands. Two strands stay together the whole time, even when copied. Keeps parental strands open to act as templates. Enzyme features: dna polymerase unable to begin dna synthesis on a bare template. Dna primase must make a short rna primer: dna poly(cid:373)erase (cid:272)a(cid:374) o(cid:374)ly (cid:449)ork 5" 3". Made in direction the fork is moving. Dna synthesized as one long continuous molecule. Dna sy(cid:374)thesized 5" 3" (cid:271)ut as okazaki fragments.