What are the general characteristics of sexual reproduction

inhumans and other vertebrates that are associated with

continuousproduction of many sperm cells but intermittent, finite

productionof egg cells?

The main reason behind this is that sperm cells forms as a result of an incessantly dividing spermatagonium. As a result, four sperm cells are produced from only a differentiated spermatagonium. On the other hand, the oocytes do not have such stem cells and they are capable of yielding only one ovum. Oogenesis is a more complex process than spermatogenesis and thus requires a complicated interaction of various factors and hormones within the oocytes.