A scientist can help their colleague do a better experiment in a few ways. For one, if it is an experiment on color or texture, They could tell you how it feels or looks from another persons perspective, not just your own.
In order for me to assist you, you must attach an image of the graph. :)
Answer:
Genotypes determine the phenotypes expressed
Explanation:
Question:why were maggots there only after the flies left
Hypotheses:the maggots are fly larva