Topic 7.1: DNA Structure and Replication
Essential Idea: The structure of DNA is ideally suited to its function.
At SHS, Topic 7.1 is taught in the following class unit(s):
Statements & Objectives:
7.1.U1 DNA structure suggested a mechanism for DNA replication.
7.1.U2 Nucleosomes help to supercoil the DNA.
7.1.U3 DNA replication is continuous on the leading strand and discontinuous on the lagging strand.
7.1.U4 DNA replication is carried out by a complex system of enzymes.
7.1.U5 DNA polymerases can only add nucleotides to the 3’ end of a primer.
7.1.U6 Some regions of DNA do not code for proteins but have other important functions.
7.1.A1 Rosalind Franklin and Maurice Wilkins’ investigation of DNA structures by X-ray diffraction.
7.1.A2 Tandem repeats are used in DNA profiling.
7.1.A3 Use of nucleotides containing dideoxyrubonucleic acid to stop DNA replication in preparation of samples for base sequencing.
7.1.S1 Analysis of results of the Hershey and Chase experiment providing evidence that DNA is the genetic material.
7.1.S2 Utilization of molecular visualization software to analyze the association between protein and DNA profiling.
7.1.NOS Making careful observations-Rosalind Franklin’s X-ray diffraction provided crucial evidence that DNA is a double helix.
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