Chapter 10 Molecular Biology.docx

Chapter 10 Molecular Biology.docx - Chapter 10 Molecular...

Info icon This preview shows pages 1–2. Sign up to view the full content.

Chapter 10 Molecular Biology: the gene Molecular Biology: the study of heredity at the molecular level. Bacteriophages: show that DNA is the genetic material of T2, a virus that infects the bacterium EColi Bacteriophages (Phages) are viruses that infect bacteria cells DNA and RNA Nucleotides: the building blocks Sugar phosphate backbone Bonded by covalent bonds 3 for every CG 2 for every AT Nucleotide Nitrogenous base 5 Carbon sugar Phosphate group Each type of DNA nucleotide has a different nitrogen containing base: T,C,A,G James Watson & Francis Crick: Studied protein structure with a technique called x-ray crystallography Rosalind Franklin & Maurice Wilkens: DNA was produced in their lab DNA replication follows a semiconservative model. The two DNA strands separate Each strand becomes a template for the assembly of a complimentary strand from a supply of Free nucleotides. Each new DNA helix has one old strand with one new strand. Replication of a DNA molecule begins at particular sites called origins of replication DNA Polymerases: add nucleotides only to the 3’ end of the strand, never to the 5’ end DNA Ligase: links the pieces together in a DNA strand (ligase: creates bond) Ex: backstitching. First stitches are Polymerases and back stitching is ligates.
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern