1. DNA Structure & Replication

From the Stage 2 SACE Biology course outline, this video discusses: - DNA stores and transmits genetic information; it functions in the same way in all living things. - DNA is a helical double-stranded molecule. - In eukaryotes, DNA is bound to histone proteins in linear chromosomes, which are found in the nucleus. - DNA is unbound and circular in the cytosol of prokaryotes and in the mitochondria and chloroplasts of eukaryotes. • Compare chromosomes in prokaryotes and eukaryotes. - Replication of DNA allows for genetic information to be inherited. - Base-pairing rules and method of DNA replication are universal. • Describe the structural properties of the DNA molecule, including:  nucleotide composition and pairing  the weak bonds between strands of DNA that allow for replication. • Explain the importance of complementary base pairing (A–T and C–G). • Describe and represent the process of semi-conservative replication of DNA.