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Invisible wrote:
> Sure, by no means all animals use chromosomal sex determination.
>
> Crocodiles use the temperature of the eggs during their development, for
> example. I'm told there's a species of Gobi (that's a fish) that are all
> born male, and all grow up to be female. And let's not even get into the
> number of animals which are simultaneously male *and* female... It's a
> weird, weird world out there!
And what we miss from all this variety is the thing in common:
Virtually all multicellular life reproduces sexually at some phase.
Regards,
John
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