growth media used in the smallest volume in which cells can grow.
growth media designed to minimize the growth of contaminants.
growth media that contains the minimal nutritional requirements for normal cells.
a way to visualize new mutations in a minimum amount of time.
used to reveal only mutant cell colonies against a dark background.
only the plate supplemented with arginine.
only the plate lacking arginine.
the plate supplemented with arginine,but only if a mutation occurred.
They mixed strains A and B together.
They put strain A on one side of a U-shaped tube and strain B on the other,with a filter between them.
They found bio- met- cells.
They plated strain A and strain B separately onto minimal media plates to screen for spontaneous prototrophs.
They observed mating bridges with transmission electron microscopes.