The zygote cells divide during the travels and form a blastula. Eventually the corpus luteum stops producing progesterone, etc. Sexual maturity is initiated. Thus, no ovulation until this process stops. Requires low temperature, therefore a scrotal sac.
Sperm production is a continuous process once puberty is reached.
FSH stimulates spermatogenesis. Hormone production Produces testosterone. LH stimulates testosterone production. B. Hormonal regulation. Sperm production is constant following puberty.