A positive point source charge of +1.0 nC is located at the xy coordinate of (2,0), where x and y are both in meters. A second point source charge of +1.0 nC is located at the coordinate (0,2). Calculate the net electric force on a test charge of -2.0 C at the origin (0,0). Round to two significant digits.

If protein X binds to DNA at the consensus sequence ATGGAAGG,

Why does the hairpin form in Rho-independent termination?

Which is the 3-prime carbon?

Heterochromatin is

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?