The expression "has been informative" is correct and usable in written English.
You can use it when you want to acknowledge that something has been helpful and informative in providing knowledge. For example, "I'd like to thank Mr. Jones for his presentation today. It has been informative and gave us a better understanding of the topic."
Even when the information gathered for those studies has been informative, problems with the use of this type of molecular data (saturation synonymous sites with mtDNA; constrains imposed on RNA sites by secondary structure, length variation, etc).
Attack ads remind voters that she has voted with the Democratic majority in the Senate 96% of the time, but her occasional dissent from the party line has been informative.
However, foresight has been informative in nature, focusing on influencing policy thinking rather than policy making.1 Today, foresight is accepted as a knowledge tool for decision-making on R&I priorities.
I've got to believe that having Minoru Makihara, the former chairman of Mitsubishi, has been informative to IBM's strategy in Japan and Asia, the business situation in those markets and how it might relate to the company as a whole.
It has been informative at the species-level discrimination across a variety of groups from terrestrial, marine and freshwater environments [30] [35].
Retrospective analysis of splicing in cells with naturally-occurring mutations has been informative but is not compatible with directed experimentation and lacks appropriate isogenic controls [15], [16], [17].
Including such information could have been informative.
Nevertheless, transplanting GFP-labelled cells would also have been informative, e.g. in providing information about transplanted non-pigment cells.
It would have been informative to have had additional demographic information, such as socioeconomic status.
These components have been informative for revealing normal and abnormal information processing associated with underlying neural substrates (Fig. 1).
