This has to do with Polymerase Chain Reaction. If you know this stuff please fill in all the blanks. Will give BRAINLIEST to whoever fills in all the blanks and thank you and a 5 star rating!

Consider a culture medium on which only gram-positive organisms such as staphylococcus aureus colonies can grow due to an elevated nacl level. a yellow halo surrounds the growth, indicating the bacterium fermented a sugar in the medium, decreasing the ph as a result and changing the color of a ph indicator chemical. this type of medium would be referred to as a differential and enrichment culture.