How do behavior, morphology and physiology act in concert to improve a male's reproductive success - and why is there so much variation among outcomes within and between species? Aa Aa Aa ...

For years, advocates of reproductive freedom have been waiting for the arrival of male birth control (besides condoms and ...

A new study on Amborella trichopoda reveals new insights into plant sex determination, shedding light on the evolution of ...

Inadequate Vitamin E may impair sperm function, affecting motility and overall viability which is an issue that could ...

This cumbersome trait significantly decreases the male's chances of survival. It only exists because it confers an advantage to its bearer in the form of increased reproductive success.

Male: By the tenth week of pregnancy, a fetus's gender is evident, and by week 14 sex organs have formed. Female: At 20 weeks, a female fetus has a fully developed reproductive system, replete ...

The Male Reproductive Medicine and Surgery fellowship is a one-year fellowship under the mentorship of Larry Lipshultz, M.D., professor of urology and the Lester and Sue Smith Endowed chair for ...

Male and female reproductive systems allow human reproduction. Fertilisation occurs when a sperm and egg join to form an embryo. An embryo develops into an unborn baby in the uterus during pregnancy.