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Author Topic:   What is Salty's 'semi-meiotic hypothesis'
PaulK
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Posts: 17828
Joined: 01-10-2003
Member Rating: 2.5


Message 25 of 63 (37620)
04-22-2003 6:36 PM
Reply to: Message 11 by derwood
04-22-2003 9:38 AM


Re: In a nutshell...
A couple of extra points that seme to be important.
Firstly chromosomal rearrangement is proposed to be the mechanism to produce macroevolution. Mutations to Hox genes have been demonstrated to produce macromutations - but chromosmal rearrangement has not. So there is no real evidence for this hypothesis.
The use of chromosomal rearrangements adds to a known problem of "hopeful monsters" - where does the "monster" find a mate. To solve this it is proposed that all ancestral species reproduced asexually. Needless to say there is no real evidence for this.
The additional problem of "hopeful monsters" - that slow refinement works more reliable than large jumps in "phenotype space" is answered by proposing directed evolution. For which there is no real evidence.
On this basis alone the semi-meiotic hypothesis seesm to be a very unpromising piece of speculation, far inferior to the theory that it is supposed to replace.

This message is a reply to:
 Message 11 by derwood, posted 04-22-2003 9:38 AM derwood has not replied

Replies to this message:
 Message 28 by John A. Davison, posted 04-22-2003 7:00 PM PaulK has replied

PaulK
Member
Posts: 17828
Joined: 01-10-2003
Member Rating: 2.5


Message 29 of 63 (37626)
04-22-2003 7:31 PM
Reply to: Message 28 by John A. Davison
04-22-2003 7:00 PM


Re: In a nutshell...
Despite your false claim that I have "obviously" not read your writings you have no substantive rebuttal.
Obviously you need to rely on personal attacks rather than deal with the facts.

This message is a reply to:
 Message 28 by John A. Davison, posted 04-22-2003 7:00 PM John A. Davison has not replied

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