In this performance Task you will answer five questions. Why has so much effort been expended on studying DNA, a single
molecule? One reason is that DNA could be viewed as the key to
understanding life itself. Separate the following roles into those that
are directly attributable to DNA and those that are not
storing genetic information regulating body temperature
When Arthur Kornberg was researching DNA replication in
1956 and discovered polymerase, he was building on work
done by many other scientists. Frederick Griffith began the
process in 1928, when he discovered the presence of a
"transforming factor" that could be passed from one bacterial
cell to another. Hershey and Chase identified DNA as that
transforming factor. Edwin Chargaff, Rosalind Franklin,
James Watson, and Francis Crick all contributed still more
pieces to the understanding of DNA's structure. Like many
scientific discoveries, this process has been an incremental
effort over many years.
preventing mutations
providing the template to build proteins
allowing copies of genetic material to be made as part of cell
division
Role of DNA
Not Role of DNA