life cycles

Allen Smith allens at yang.earlham.edu
Fri Apr 17 14:26:44 EST 1992


In article <9204161802.AA29177 at rust.zso.dec.com>, french at RUST.ZSO.DEC.COM writes
   :
> For many organisms, a pre-programmed life-cycle
> appears to dominate other components of ageing such as
> damage from radicals and radiation.  For example, trout
> turn ugly just before spawning and die shortly afterwards.
>
> It seems unlikely that a trout's DNA suddenly deteriorates
> from radical and radiation damage unless a repair mechanism
> is turned off near the end of its life cycle.

        However, is the death/"uglinesss" due to DNA damage or simple
regulation of other genes by biological clocks?
        -Allen
>




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