Bag seed is a really good chance to be a poorly feminized seed... meaniing it is very likely to be unstable and a hermie can be expected or some odd growth etc etc... it'll be a short-bus seed more times than not. Well, diary doesn't look retarded, so all good.
can't tell from that pic. As they mature, even in vege, you will see pistils porturding form the littly calyxes at each node. This may take more time than you plant to grow.
You'll know early in bloom, regardless. Beliwve sacs develop sooner, too, but you can recognize them before they are viable and remove the plants before anything gets pollinated.
Get the glasses on, and if oyu see little whispy white stuff popping out of those little calyxes, it's a girl!
bunch of grapes form, and it's a dude.