Sarah+E+H

flat =Cheek Cell Lab Homework=

Did everyone in your group have about the same extraction results? Why is this the case? How is the amount of DNA that you extracted affected by your day to day activities?

No not everyone in our group had the same results. Some had more cheek cell DNA visible than others and some had none at all. I think a case having to do with this would be that everyone carries out different activities that may affect the amount of DNA visible. The amount of DNA extracted can be affected by daily activities such as chewing gum, chewing your cheek, eating, drinking, etc.

=DNA Replication Summary =

DNA replication occurs so that a mother and father can give their children a copy of their genetic information. DNA replication starts on the leading strand of DNA. Step one the hydrogen bond is broken using a helicase in order to become a single strand. Step two it must attach a single stranded binding proteins to keep strands from coming together. Step three a primase attaches to give a starting point. Step four a polymerase binds and begins to replicate the DNA.

Next, replication of the lagging strand of DNA begins. To undergo replication it goes through the same four steps that the leading strand goes through with a few additional steps. After steps one through four occur the DNA strands form Okazaki fragments. These fragments are then bound together by a ligase. These are the steps of DNA replication of the leading and the lagging strands.

=DNA Infographics= http://www.biography.com/people/oswald-avery-37364 http://www.facebook.com/note.php?note_id=196962410327466 http://history.nih.gov/exhibits/nirenberg/popup_htm/03_chargoff.htm http://www.dnalc.org/view/16406-Gallery-18-Alfred-Hershey-and-Martha-Chase-1953.html http://en.wikipedia.org/wiki/Frederick_Griffith http://www.msnbc.msn.com/id/19076263/ns/business-future_of_business/t/fifteen-people-who-changed-world/#.TylYJuBa9g8 = Infectious Disease Infograph = http://www.flickr.com/photos/joeyharrison/1346004019/ (Joey Harrison) http://www.flickr.com/photos/mcfarlandmo/4014611539/ (mcfarlandmo) http://www.flickr.com/photos/crajeeshelly/5042037629/ (shivalichopra) http://www.flickr.com/photos/marineperez/4698707308/ (miss_millions) http://www.flickr.com/photos/peterhellberg/6217937724/ (Peter Hellberg) http://www.flickr.com/photos/quinnanya/1654892620/ (Quinn.anya) http://www.flickr.com/photos/kaibara/2234750993/ (kaibara87)
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