From Ed Rosenthal's Marijuana Success Indoors Vol. 2: (page 52) The flowers had only female chromosomes, so all their progeny (seeds) will be female.

(page 50) .....A breeder may be inadvertantly be selecting for hermaphroditism (using hermied seeds)..but this will not be apparent for the first few generations. Increased hermaphroditism may appear after 4 to 6 generations of all female crosses.

From LolaGal: What I get from this is plant your seeds. They should be fine. You won't see any males. Ed sez this is impossible. I read somewhere in this volume that Ed's opinion was that if the plant hermied early in it's life the seed would be more hermie prone. If the old gal threw a few nanners late in life....mostly girls.

Hope my vast library has been helpful. Good Luck & have fun.