Before revision:  However, no equivalent requirements have been found for producing oscillations in a single gene with  positive transcriptional feedback . To demonstrate that this single-gene network  can also easily produce rhythms , we examine a model comprised of two well-differentiated parts.
After revision:  However, no equivalent requirements have been found for producing oscillations in a single gene with positive transcriptional feedback does not produce oscillations. Here, we demonstrate that this single-gene network can also easily produce rhythms , we examine a model comprised of two well-differentiated parts.