a. How many spermatozoa are formed from one secondary spermatocyte?
b. Where does the first cleavage division of zygote take place?
(a) One secondary spermatocyte forms four spermatids, all of which subsequently develop into spermatozoa via the process spermiogenesis.
(b) The first cleavage division of zygote takes place in the ampullary-isthmus junction.