Analyze the following growth of a bacterial colony
Medium Growth
Complete with glucose Yes
Complete with lactose (no glucose) Yes
Minimal No
Minimal media plus biotin, threonine, leucine, methionine, and lactose Yes
Minimal media plus biotin, leucine, and glucose No
Minimal media plus threonine, leucine, and lactose No
Minimal media plus leucine, methionine, and glucose Yes
What is the genotype of the bacterium?
A) bio+, thr+, leu+, met+
B) bio+, thr+, lac?
C) leu+, met+, lac+
D) leu+, met+, lac?
E) bio+, leu+, lac?
Answer: C
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