Answer:
D. Multiple antibiotic resistance genes.
Explanation:
A plasmid with multiple antibiotic resistance genes is important during cloning as it helps in selectivity of the specific clones during transformation of bacteria.
The gram stain differentiates two types of bacteria based on the composition of their cell walls. it uses a primary stain, a mordant, a decolorized, and a secondary stain to allow for the visualization of these structural differences.
They are formed from the cooling and solidification of molten magma. that is the primary means of formation.
They could be precipitated out of solution.
They are also formed during metamorphism, under high temperature and pressure, minerals recrystalize and form new minerals.
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