"Experiments on tiny nematode worms have revealed why some creatures produce far more female than male offspring.
Male-producing sperm in this Rhabditis nematode worm are what the researchers described as 'duds'.
These sperm are paralysed - unable to move and therefore unable to to fertilise eggs.
Producing an 'excess' of daughters enables these humble, very short-lived creatures to rapidly produce large numbers of offspring."
Saturday, July 9, 2011
I thought he said DUDES
BBC - Earth News - Male-producing worm sperm are 'paralysed':
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