Natural Science Forum / Biology / Evolution / March 2005

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In that thread, he said so, is it true that gay genes exist ?
[moderator's note: Since this will probably break on ...

This group doesnt seem to deal in human evolution but here goes.
It seems probable that our ancestors-out-of Africa crossed from Africa into
the Yemen about 80,000 years ago. We are almost all descended from them. My
puzzle is that currently the artistic explosion that took place ...

This quote from a fun article on lab-built life ,
"Life Built to Order" by M. Stroh (Pop Science)
The question they ask about the origin is this:
"What combination of inanimate molecules led,

NAD is an abbreviation for nicotinamide adenine dinucleotide.  Discard
the adenosine and you get NMN - nicotinamide mononucleotide.
NAD is perhaps the most important redox cofactor in modern biochemistry.
But we here want to speculate on NMN's possible role as a nucleotide in

In our recent discussions on this topic, John Wilkins (who is heartily
welcomed back to SBE) argued that traits of individuals who comprise a
species did not count as traits of the species. I disagreed with him at the
time, but while reading about the divergence of cichlids in ...

Preserved T. rex soft tissue recovered
For more than a century, the study of dinosaurs has been limited to
fossilized bones. Now, researchers have recovered 70-million-year-old
soft tissue, including what may be blood vessels and cells, from a

http://www.indystar.com/articles/4/231309-8344-010.html
Reports on some scientists claiming to have found non-DNA
inheritance - which they suspect is mediated by RNA.
I give the story a large chance of not panning out.

ORIGIN OF LIFE: IN SEARCH OF THE SIMPLEST CELL
The following points are made by Eörs Szathmary (Nature 2005 433:469):
1) In investigating the origin of life and the simplest possible life forms,
one needs to enquire about the composition and working of a minimal cell

How the hell does lawn weed killer kill weeds but not my grass?
How is it that my application of a weed killer didn't poison my lawn or
my kids but within days my dandilions & crabgrass began wilting?
What is different about dandilions & crabgrass versus fescue & bermuda

Genome-wide non-mendelian inheritance of extra-genomic information in
Arabidopsis
SUSAN J. LOLLE*, JENNIFER L. VICTOR, JESSICA M. YOUNG & ROBERT E. PRUITT*
Department of Botany and Plant Pathology, Purdue University, 915 W. State

Related to the recent thread regarding whether humankind's brain
actually evolved beyond that necessary to solve the then-current
requirements for survival ....
I recently read about something the "Law of 150". As it turns out, the

I'm just wondering how Hamilton theories are applied to real life situations
like the one involving Kanzi, probably the most famous Bonobo (Pan
paniscus).
Kanzi's mother, Laurel, came from the San Diego Zoo.  Another female,

Is RNA inheritance possible?
Researchers find plant clues to a non-DNA pathway for genetic transmission
By Laura M Hrastar
Evidence for inheritance based on RNA has been found in a particularly

http://msnbc.msn.com/id/7258154/
...reports on "The world?s biggest study on the impact of genetically
modified crops on wildlife".
The page says it:

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