Two primary oocytes from a dog have proceeded through meiosi

Two primary oocytes from a dog have proceeded through meiosis. How many TOTAL monads would there be from ALL the ova produced by these two primary oocytes?

Solution

One primary oocyte produces one mature ovum and three polar bodies. Thus, two mature ovums are produced by two primary oocytes.

The polar body degrades itself, and is not capable of being fertilized. These polar bodies are small in size because they receive small amount of cytoplasm, while the ovum receive high amount of the cytoplasm.