Why is colony morphology not considered reliable for species identification? (Select all that apply)
A) Species may respond differently on different nutritional formulations in media
B) Colony size can differ on a single plate depending upon proximity of the cells applied
C) Mutations may affect uniformity of colony appearances
D) Agar can differ in nutrient composition in different areas within a culture dish
E) Agar formulations vary from one batch to another
Correct Answer:
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