not able to really tell mate. once those leaves in the internodes begin to sprout further, they will become larger branches that look identical to the top leaves, and in flowering, will look the same as a cola, but smaller than the main one. those branches have some time to go before they are ready to tell the sex of them... you can only tell the sex into flowering, roughly a week or two in. i sexed mine in a week. and was unable to sex them until that week into the flowering cycle (after 5 weeks veg). so. ya