week 4 consensus sequence

week 4 consensus sequence - Consensus Sequences When...

Info icon This preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Consensus Sequences When analyzing DNA sequences of important genetic elements such as genes and promoters, it becomes clear that cells can use DNA sequences that do the same thing, but are slightly different in the actual sequence. A good example of this is a promoter. The promoter is the region of DNA that is used as a binding and start position for RNA polymerase during transcription. It turns out that the sequence of DNA used in promoters varies between promoters in any particular species and in addition between promoters for similar genes in different bacteria. It is time consuming to report every promoter sequence observed, so scientists will use a consensus sequence to define an overall sequence of a promoter (or genes, or whatever sequence they are studying). Consensus sequences are sometimes thought of as the “average” sequence, although it is better thought of as the most likely sequence you would observe if you analyzed a new promoter.
Image of page 1
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