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Biology: DNA

Terms in this set (54)

What evidence supports the presence of DNA?
offspring are the same organism and look like their parents
Does every cell in an organism have the same DNA
yes, except sex cells
What did Griffith study?
pneumonia in mice
S type
smooth, had a coat, virulent because it killed mice
R type
rough, no coat, avirulent because mice live
What happened when mice were injected with heat killed S cells
mice lived
What happened when mice were injected with heat killed S and living R
mice died
Griffith called this _______________ because something got into R to make S. Bacteria were changed by absorbing genetic material from an outside source.
Transfomation
What did Hershey and Chase find out?
DNA is genetic material
What are bacteriophages?
virus that infects bacteria
What is transduction?
incorporation into host cell's DNA
What carries the genetic blueprint for life (heredity)?
DNA
Where is DNA located and in what form?
in the nucleus of eukaryotic cells as chromatin
What is the structure of DNA?
double helix
What did Watson and Crick do?
Uncovered the structure (1962), and built a model
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