The bacterial colonies transformed with the "unknown" plasmids (p3-green, p15-pink, p22 -purple) show a colored phenotype ...
Answer choices 
1. due to the expression of fluorescent proteins that absorbs light at wavelengths longer they than exhibit.
2. all of these answers.
3. due to over-expression of a foreign gene that encodes a fluorescent coral protein.
4. resulting from ampicillin-induced selective gene expression.
5. that reflects their own native genotype.