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Author Topic:   "Macro" vs "Micro" genetic "kind" mechanism?
Loudmouth
Inactive Member


Message 90 of 248 (123959)
07-12-2004 1:37 PM
Reply to: Message 87 by RAZD
07-12-2004 11:50 AM


Re: lesbian lizard clones
quote:
but
each {one \ clone lineage} should be accumulating mutations and adapting in much the same way the "usual suspects" of asexual organisms adapt, and natural selection would pick the individuals to survive to breed in the same way.
As Mammuthus pointed out above, sexual reproduction aids in the dispersal of genotypes. Bacteria, also cloners, have the advantage of multiplying quickly (eg generation time of 20 minutes) as compared to lizards which only reproduce once a year. If the population were brought to 1% of current size the whiptails would be in serious danger.

This message is a reply to:
 Message 87 by RAZD, posted 07-12-2004 11:50 AM RAZD has replied

Replies to this message:
 Message 91 by RAZD, posted 07-12-2004 2:31 PM Loudmouth has replied

  
Loudmouth
Inactive Member


Message 92 of 248 (124014)
07-12-2004 4:19 PM
Reply to: Message 91 by RAZD
07-12-2004 2:31 PM


Re: lesbian lizard clones
We are getting a little off topic, but just a quick reply and we can maybe try to veer back on topic.
quote:
these bacteria live in slow motion compared to others.
First, the tubeworms that you referenced are not bacteria but metazoans. Secondly, lifespan is not the variable under question but rather generation time. Lizards reproduce once a year asexually while many bacteria (in the right conditions) can reproduce once every 20 minutes. This is quite a difference. Usually (and I stress usually) a healthy population of organisms that only reproduces once a year relies on gametes produced by meiosis to ensure a mixture of alleles to the next generation.

This message is a reply to:
 Message 91 by RAZD, posted 07-12-2004 2:31 PM RAZD has replied

Replies to this message:
 Message 93 by RAZD, posted 07-12-2004 5:11 PM Loudmouth has not replied

  
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