RE: Genetic comparisons

["Dukelow, James S Jr" <jim.dukelow@PNL.GOV>]

Ruth Sponsler wrote:

-----Original Message-----

From: Ruth Sponsler [mailto:jk5554@yahoo.com]

Sent: Monday, May 13, 2002 11:17 AM

To: Jacobus, John (OD/ORS); RadSafe

Subject: Re: Genetic comparisons





It makes sense that insects are genetically closer to

humans than nematodes.  This result will probably

disappoint some gerontologists who have been using

_Caenorhabditis elegans_ (a nematode) as a model of

longevity.



I remember my insect morphology professor stating

numerous times that the arthropods, in particular the

Class Insecta, are the most evolutionarily advanced

line of invertebrates.  [Nematodes are less advanced].

 

Obviously there is a very large split in the lineage

between invertebrates and vertebrates, but the insects

are at the top of the invertebrate lineage.  Insects

are often cheap and easy to rear and are a reasonably

good model for general information.



    <snip>



=======================



With all due respect to your insect morphology professor, it is generally

accepted that cephalopods are the nerds and geeks of the invertebrate world.



Best regards.



Jim Dukelow

Pacific Northwest National Laboratory

Richland, WA

jim.dukelow@pnl.gov



These comments are mine and have not been reviewed and/or approved by my

management or by the U.S. Department of Energy.

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