PLEASE HELP WITH GENETIC! (It's interesting)

[Samael66]

Suppose why the presence (U) in the system of cell-free protein synthesis containing poly (U), poly (A) and poly (G) does not determine the inclusion of 14C-phenylalanine in the synthesized polypeptide molecule.

[chalcogen]

Are you asking for help with a biochemistry homework question? Did you translate it into English from French? If so, please just post it in French- the English is confusing.

[Samael66]

Are you asking for help with a biochemistry homework question? Did you translate it into English from French? If so, please just post it in French- the English is confusing.

Actually i'm studying at the university in England, so it is the original text. Maybe there is really mistake in that...
Please, can you say to me, what words are confusing?
Hope on your support in my problem...