The Trials of Life
Episode 12 - Continuing the Line. This episode illustrates how species fulfil their ultimate raison d'etre and ensure that their genes are passed on to the next generation. It is a universal problem, but one which has given rise to a variety of solutions. Barnacles cannot move, but each has both male and female sex cells, allowing each neighbour to be a potential mate. On the other end of the scale, a female elephant undergoes a long pregnancy - 22 months - and so wishes to ensure that her calf is fathered by a strong and proven male. She is therefore very choosy about her partner. (from wikipedia.org)
| Episode 12 - Continuing the Line |
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