[Elsie]

ok....

but HOW did the SEXUAL creatures arise??

[VadeRetro]

... but HOW did the SEXUAL creatures arise??

Just curious, how much do you remember from the last time we did this?

[VadeRetro]

The Don Lindsay "For Dummies" version, decent conceptually but under-technical.

How Would Sex Evolve and Why?

Below, a lesser light paraphrases a more detailed treatment in a book by Schopf.

http://www.freerepublic.com/forum/a3a535d71403d.htm#111.

A point on sexual versus asexual (from the introductory year in which the online Britannica was a free site):

http://www.freerepublic.com/forum/a3a77bb972460.htm#164.