The Human Animal (TV series)
Videos
The Human Animal: A Personal View of the Human Species is a British nature documentary series written and presented by English zoologist Desmond Morris, first transmitted on BBC One in the United King
UK VHS cover
Human sperm competition
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Sperm competition is a form of post-copulatory sexual selection whereby male sperm simultaneously physically compete to fertilize a single ovum. Sperm competition occurs between sperm from two or more
The Human Animal (TV series)
…The depiction is followed by a microscopic view of human fertilization, helping to explain the defensive behaviours of the ovum to prevent multiple sperm cells from fertilizing it. For the first time, the programme actually showed artificial insemination, highlighting how these mechanisms work in a controlled…
Stained human sperm