BIO 1140 midterm: BIO Midterm 3 Notes
Document Summary
Understand and describe the key experiments that allowed us to determine: *you should know the names of the scientists but not the dates: that dna is the hereditary material for life. He infected mice with two different versions of pneumonia, one looked smooth (outer shell) the other looked rough (no outer shell). The smooth one caused disease, rough did not. When the smooth bacteria were heated, it became denatured and does not cause harm. However, when mixed with the non-pathogenic aka the rough one, it caused disease. But, when the bacteria were isolated, the bacteria became the smooth version once more. This is known as the principle of transformation, but griffith did not know exactly what was going on. But they only took the medium only the bacteria were growing in. they then split it into three and treated each one with a different enzyme. 1 was a protease which meant only dna and rna was present.
