When you fertilize the egg, the game ends and you get an outcome based on your gene pool.
There are 11 different endings :) If you can unlock them tho.
You only live once create the best version of urself for the life ahead ;)
Share your outcomes here if you can get some rare ones ;)
Try to get as many genes as you can before fertilizing or you can choose to live as a regular human.
That is totally up to the player :)