Quiz 2keynew - Quiz 2 Key Biology 340 General Genetics...

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

View Full Document Right Arrow Icon
Quiz 2 Key, Biology 340, General Genetics, Spring, 2008 1. a) please briefly explain what happens when DNA is denatured. b) what characteristic of the DNA may affect the rate [should say temperature not rate] at which denaturation occurs? c) please briefly explain the process of renaturation of DNA. d) If fragments of genomic DNA are renatured what might affect the rate of renaturation of that DNA? a) when DNA is heated the hydrogen bonds between the two strands break and the two strands will separate. b) the base composition of the DNA will affect the temperature at which denaturation occurs. For example, a fragment of DNA that is 60% G/C and 40% A/T will need a higher temperature to denature than will a similar-sized fragment of DNA that is 40% G/ C and 60% A/T. [Rate is affected by the length of the fragment.) c) renaturation occurs when the DNA is cooled. Renaturation is based on the formation of hydrogen bonds between complementary base pairs. d) copy number of the DNA [for example, high copy number = repetitive DNA] will affect the rate at which renaturation occurs.
Image of page 1

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

View Full Document Right Arrow Icon
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