No, there were three or four others on the same plant. They showed up in the fifth week of the grow cycle, low on the plant. All of the leaves, on the plant, are normal seven to nine 'fingers'. Several of the plants, early on, had new leaves that looked 'crinkly', like kale when they first came on. The crinkled leaves smoothed out as they grew.
I have not found any other anomalies with the plants since then. I do not know their strain except that they were from some really good 'street' weed I got several years ago, or at least good enough to hang on to the seeds!