Tag Archives: sex

11.4 Sexual Reproduction

6.6. & 11.4 Reproduction from Bob Smullen

Paul Andersen describes The Reproductive System in 9m. In Crash Course Biology #34 – The Reproductive System: How Gonads Go, Hank lets us in on the meaning of life, at least from a biological perspective – it’s reproduction.


Fantastic animated tutorials from McGraw Hill Education – spermatogenesis &  the  maturation of the oocyte & follicle.


Impressive Journey of Sperm – a 6m video on fertilisation.


Day 0 to 7 Fertilization, Zygote, Blastocyst 4m video from Armando Hasudungan. Implantation – a 2m 53s animation.

A Biologist’s Mother’s Day Song (3m 50s):

Amazing – Child is born still inside Amniotic Sac – happens to just one in every 80,000 babies