Avery, MacLeod and McCarty found that if the heat-killed virulent (deadly) bacteria was treated with DNase prior to adding the non-virulent bacteria, that the non-virulent bacteria did not become virulent. This experiment showed that

In a DNA extraction, alcohol allows us to isolate DNA because

After DNA is replicated (and before mitosis), the two identical copies of DNA attached at the centromere are

Why are model organisms so useful in genetics research? 

In the kitchen experiment, we used pure water to represent which osmotic concentration?

Identify the hair thin purple fibers in this image above.

What type of cartilage is this sample shown above?

Identify the type of cartilage shown above.

What is the name for the part of the microscope at ‘A’ above?

Identify the tissue type at the end of th pointer.