xplores the various methods of animal reproduction, highlighting the dependency of young animals on their parents, particularly in mammals, birds, and amphibians. It explains both asexual reproduction ...

The film "Reproduction Among Mammals" provides a detailed overview of the reproductive processes in mammals, particularly focusing on pigs. It describes the development of sperm in the testes, their ...

WASHINGTON D.C., Feb. 28, 2016 -- The development of every animal in the history of the world began with a simple step: the fusion of a spermatozoon (the male gamete) with an oocyte, or egg (the ...

An enigma -- unique to flowering plants -- has been solved by researchers from the UK and South Korea. Scientists already knew that flowering plants require not one, but two sperm cells for successful ...

BAYAHIBE, Dominican Republic (AP) — Oxygen tank strapped to his back, Michael del Rosario moves his fins delicately as he glides along an underwater nursery just off the Dominican Republic coast, ...