Final answer:
Patterns of hydrolysis of tyrosine, xanthine, and casein are helpful in identifying species within the genus Pseudomonas, which includes Pseudomonas aeruginosa known for its blue-green pigment.
Step-by-step explanation:
In making species identification within genera Pseudomonas, patterns of hydrolysis of tyrosine, xanthine, and casein are helpful. This group of bacteria is known for its diverse metabolic capabilities, including the ability to break down these compounds. Pseudomonas species can be identified based on their biochemical characteristics, such as pigment production and the ability to grow on specific media. In particular, Pseudomonas aeruginosa is notorious for its blue-green pigment and its role in hospital-acquired infections. Furthermore, Pseudomonas spp. may produce fluorescein which can be observed by its green fluorescence under ultraviolet light.