Natural World
Season 3 Episode 6 - Peacocks, Parasites And The Puzzle Of Sex
7.1 ?
1983
Documentary
What's the purpose of sex? To protect us from disease! Brian Leith unravels the intricate puzzle of sex and finds that: Males seem to be a waste of time and energy - many of the successful plants and animals (like the weeds in your garden) do without them altogether! Big animals - from polar bears to human beings - always have males as well as females - for a very good reason! The vital clue to the mystery lies in parasitism and infection. Out of the puzzle emerges a sparkling new theory of sex that looks set to keep biologists buzzing for years.
Episodes in Season 3
1
Among The Wild Chimpanzees
50 min
2
One Man's Island
50 min
3
Invaders Of The Truk Lagoon
50 min
4
The Desire Of The Moth
50 min
5
A Question Of Space
50 min
6
Peacocks, Parasites And The Puzzle Of Sex
50 min
NOW PLAYING
7
Land Of Ice And Fire
50 min
8
The Lost World Of Medusa
50 min
9
Kinabalu - Summit Of Borneo
50 min
10
Wild Ireland
50 min
11
Water - A Fresh Look
50 min
12
Battle Of The Leaves
50 min
13
The Year Of The Rat
50 min
14
Through Animal Eyes
50 min
15
Within A Garden Wall
50 min
