Thanks for the replies.

A couple of pics to help judge. They were flowering as normal and only showing pistils. Then I noticed a slowing in budding and now I see seeds. Only the sativas have seeds. The indicas are flowering as normal. The mom of the sativas did show balls but all were cut off and the mom has no seeds growing, only bud. (see pic 1 tallest cola) Pic three is of the indica mom that has no seeds either. My fan blows air around so I really don't think that it was a male plant that dropped pollen. I think it is just the genetics maybe. If so does anyone know if it would be possible to get a female seed from this plant?
Pic 4 is a indica female that is flowering normal.