Question

______ is a bacterium that has lost the ability to synthesize one or more organic components through a mutation. They are designated by the compound that they are unable to synthesize and the subscript "his-" is unable to synthesize histidine "his+" can.

Answer 1

An auxotroph is a bacterium that has lost the ability to synthesize one or more organic components due to a mutation.

Step-by-step explanation:

The bacterium that has lost the ability to synthesize one or more organic components through a mutation is called an auxotroph. These auxotrophs are designated by the compound that they are unable to synthesize, for example, an auxotroph unable to synthesize histidine is denoted as his-. On the other hand, an auxotroph capable of synthesizing histidine is denoted as his+. They are designated by the compound they are unable to synthesize, such as histidine.