The Worker is the most well known of the bees you see. These are the bees that do all the work to maintain the hive. Nurses, Foragers, Builders, these are the little ones that make the hive function under direction of their queen.
The Anatomy of the Workers is almost identical to the Queen except for the atrophed ovaries. They are even genetically the same, but they cannot ever become queens. Without a queen directing them by pheromone, they will try to become queens, but can never produce viable offspring.
The Queen is bigger than the Worker, this is drawn as a Mated Queen. Virgin Queens have slightly shorter abdomens, but after mating, they take this form, require only one mating flight to lay thousands of eggs through out their lives.
Inside, Queens are set up almost entirely for their jobs as Mother to thousands of bees. The only difference between her form and her Workers is the fact that in her larval form, she was given Royal Jelly, a high nutrient and sugar formula, which changed her genetic expression.
Poor Drones are so easily ignored, but they are so so important and so so sweet.
Finding good examples of Drone Anatomy is Super difficult, so I put this together from bits all over the internet, in books and disections.
A highlight of this amazing organ feels important. The Drone's inverted penis will only come out in flight with a Queen, the force of its ejaculation is so intense, it creates a "Pop" Audible to humans nearby. It then falls backwards, making room for other Drones to deposit their genetic material, and falls to the ground to die of blood loss.
Bee brains are so beautiful and complex! They are affected by the same chemicals as ours, but magnified for the size. Bees communicate with pheromones, with dance, they remember complicated directions, and teach others what they know. These little things should Never be underestimated.