DNA Models Day One!!

Today we started working with the Kinex DNA models.  I gave you a bit of freedom in determining the DNA sequence, and we then made one big DNA molecule. 

Only In Miss E's Room would you find boxes of DNA

Piecing it together

 Tomorrow we will then act as  DNA Helicase and DNA Polymerase as we go through DNA Replication.

Today's Daily Questions focused on points of replication

Thursday March 29^th

How does Prokaryotic and Eukaryotic DNA replication differ?

First, Prokaryotic cells have a single circular loop of DNA  while Eukaryotic cells have many chromosomes.  Because of this, the number of replication points will differ in prokaryotic and Eukaryotic cells.

How many points of replication do prokaryotic cells have?

One point of replication (two replication forks will form)

About how many points of replication do eukaryotic cells have?

Around 100 points of replication.  If there was only one, as there is in prokaryotic cells, DNA replication would take over a MONTH!!!

By having more points of replication does DNA replication happen slower or faster?

Speeds it up.  With lots of replication points in eukaryotic DNA, replication only takes about 8 hours.