Re: Science fact question: Why 'Y'?

Brenda Clough <clough@xxxxxxxxx>:
Somebody has to have a bigger genetic package than the other. Once you
set the pattern, it just keeps on going. (If you are going to have a
very small investment, your sperm are quicker and lither if they are
smaller than the next guy's. Meanwhile, back at the X ranch, if a a big
egg/long gestation makes my offspring bigger and healthier, then eggs
will tend to get bigger or gestation longer.

And once one sex has gone towards "lean, streamlined production" the
other is stuck; if the females also reduce their contribution the
resulting embryo is at a disadvantage. Just because one sex is
benefitting does not mean that both are.

/Par

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Par usenet@xxxxxxxxxxxxxxxxxxx
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