Natural Science Forum / Biology / Evolution / August 2004

As the squid has been utilized much in neuroscientific studies, I
wonder if something is known about how the brain controls the
coloration of the skin. One might actually think that stimulating
certain parts of the brain with electrodes would result in color

Being asexual, how did the Hydra develop as a species?

Viroids, Viruses, and RNA Silencing
The small RNA world just got bigger
By Leslie A. Pray
There is growing evidence that small RNAs, believed to play an antiviral

"Malcolm" <malcolm@55bank.freeserve.co.uk>

Species mix across Panama Canal
Michael Hopkin
Fish get new neighbours as ecosystems mingle.
When the Panama Canal opened in 1914, it was a tremendous boon to the

http://www.cnn.com/2004/TECH/science/08/23/marathon.mice.ap/index.html
SAN FRANCISCO, California (AP) -- Researchers on Monday unveiled
genetically engineered mice that can run farther and longer than their
naturally bred brethren, bringing the "genetic doping" of elite

I have a question about how through evolution the number of chromosomes
can change. When the number of chromosomes changes by accident, how is
this transmitted to the next generation and so creating a new species ?
Man has 23 chromosome pairs (46 chromosomes) and a chimpansee has 24 ...

I'm looking for a COMPLETELY OPEN MINDED, generally knowledgable
individual to argue with me against the point that we are not the most
evolved of the species of life.  I don't know which particular species
is, I believe we can never find that answer because we are slaves to

Has anyone heard of smart breeding? It is an
alt to genetic modification.
"Instead of looking to other organisms for genes
with particular traits, smart breeding searches

I have composed the following form as
a required declaration of meaning for an
sbe meaningful discussion of a model or
theory applied to fictitious or real data.

Guy Hoelzer <hoelzer@unr.edu> wrote:

Twin Studies
Scientific studies performed on pairs of twins.
These studies can answer many questions in medical genetics. They are
especially useful for deciding whether a certain condition is genetic,

There have been two opposing viewpoints here on S.B.E. recently. One
view is that genes and the environment interact with each other and
therefore it is erroneous to state either the environment or DNA is
dominant in producing and shaping phenotypes. The other view while

Here is a question I don't know the answer to.
What is the point of scar tissue? It is less strong thatn normal
tissue, it doesn't breath air or water and so doesn't fill the purpose
of normal skin. So why have it? Why doesn't the body heal properly?

Hi there specialists in the beautiful field of the studies of Life
I have a question about the wonderful mechanism of DNA. If you could
tell me something relevant, or give some relevant links, all at the
level of one with a reasonable mind but unfortunately ignorant of most