Genetic astrological pattern spotted

My grandfather was a twin, my father (his son), was also a twin. I was born with Sun Moon Venus and Jupiter all in Gemini. There have been no new twins that I know of yet since my birth.

It's just an interesting realization for me and of course a bit scary. Any thoughts or similar revelations?

It's common for members of a family to share aspects. In mine, we all have mercury/uranus.
The twins factor can skip a generation or two and then repeats itself.