This is a Microbiology essay question. Please provide detailed
answers.
There is no single gene that determines whether a bacterial cell
is gram positive or negative.
a. Give examples of two genes that code for parts of the cell wall
(gram positive, negative, or both).
b. Some phenotypes, like resistance to a particular antibiotic, are
gained and lost by a bacterial lineage frequently. Why don’t we see
bacterial lineages changing back and forth between gram positive
and negative?