How do spermatogenesis and oogenesis differ in terms of the number of gametes they produce?
Spermatogenesis produces 4 spermatozoa, whilst oogenesis produces 1 ovum and 3 so-called polar bodies
I will skip any lengthy explanations and just give you a picture that should explain it:
The graphic above is correct except, that the first polar body undergoes another division. Hope it helped :)