Katie+Weaver

flat =DNA Lab Homework= Did everyone in your group have about the same extraction results? Why is this the case? No, some of us had more cheek cells in our test than others. How is the amount of DNA that you extracted affected by your day to day activities? It depends on if you have eaten or brushed your teeth lately because both of those could affect how many cheek cells come off when you do the test.

= DNA Replication Summary = The first thing that happens in DNA replication is the hydrogen bonds need to be broken. Helicase then unwinds the DNA. After that, the single stranded binding proteins attach to both strands of DNA. The binding proteins keep the strands from coming back together. The primase (an enzyme that gives a starting point to replicate DNA) then attaches to the leading strand on the 3’ end. Primase **__always__** starts at the 3’ end. The polymerase then binds and replicates DNA.

Replicating the lagging strand of DNA is almost the same, but there are a few added things. The primase starts on the opposite end as the leading strand because that is the 3’ end. It is also different because it is replicated in smaller sections called Okizaki Fragments. There are gaps left between the fragments, so the enzyme ligase fills in the gaps and the RNA produced is then replaced with DNA

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=Transcription Flip Book=

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=Diphtheria Infographic=

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